He doesn’t site Daniel 11:31, He just refers to the abomination of desolation, meaning that He could be referencing any one of the other mentions of the abomination of desolation.
Hi NILLOC. You should seriously consider using a Hebrew/English interlinear, at least for Daniel 11. You need to download it to use the advanced features and if ya have any questions about it, PM me.
http://www.scripture4all.org/
Daniel 11:31and arms from him, they shall stand up. And they profane/violate the Sanctuary, the-refuge. And they take-away the-Continually, and they give The-Abomination, one-making-desolate.
Daniel 12:11 And-from-time he-is-taken-away the-continually, and-to-give-of an-abomination, one-desolating, days, thousand, twohundreds, and ninety
This is some interesting comments made concerning the use of the "abomination of desolation in Daniel:
4) Of these three possible references to the 'abomination of desolation' in the book of Daniel, only one can be considered definitive.
Daniel Daniel 12:11 on the other hand speaks of 'AN abomination of desolation'.
Only Daniel 11:31 uses the exact phrase and contains the definite article: 'THE abomination of desolation'. Therefore Daniel 11:31 is the only reference that can be safely admitted to be the one referenced by our Lord in Matthew 24:15.
5) This above thought is confirmed by the fact that Luke's gospel records the words of Jesus that following the desolation of Jerusalem the Jewish people would fall by 'sword and captivity'.
Following the 'abomination of desolation' described in Daniel 11:31 we also see shortly following a reference to the Jewish people falling by 'sword flame and captivity' (Dan 11:33). This makes it at once clear that in Matthew 24 Jesus is primarily commenting on the material in Daniel chapters 11-12.
The 'abomination of desolation' in Daniel 12:11 however does not carry the definite article and should thus be rendered 'AN abomination of desolation'. Elliot argues that the lack of the definite article excludes 12:11 from being a direct reference to the 'abomination of desolation' of 11:31:
Hebrew Interlinear of Daniel 11:31 Showing the use of the Definite Article -
THE Abomination of Desolation
Hebrew Interlinear of Daniel 12:11 Showing the Absence of the Definite Article -
AN Abomination of Desolation
6) Jesus' discourse in Matthew 24 indicates that following the 'abomination of desolation' that there would be 'great tribulation' (Matt 24:21). This tribulation was to last until immediately preceding his second advent (Matt 24:29).
Then, as to the epoch from which the periods are to be reckoned, (an epoch marked by the setting up of some desolating abomination,) there is one thing very important to note, though hitherto, I believe, overlooked by expositors, - viz. that the definite article is wanting before the word abomination in verse (12

11"And from the time that the daily sacrifice shall be taken away, and the abomination that maketh desolate set up, there shall be a thousand two hundred and ninety days.", so that the correct rendering of the clause would be, "From the time that the daily sacrifice shall be taken away, and an abomination that makes desolate set up, there shall be 1290 days. By this not only is the desolating abomination of xi. 31, "And arms shall stand on his part, and they shall pollute the sanctuary of strength, and shall take away the daily sacrifice, and they shall place the abomination that maketh desolate", (the same that we saw reason to interpret of the Roman armies that desolated Jerusalem under Vespasian) not plainly and specifically referred to, but rather almost excluded from being the subject of reference.
There has been a HaTamid/continual [sacrifice], apart from the Temple, since the days of the Babylonian captivity. This continual has not ceased and its practice can be observed in our days at the Western Wall (the Kotel) of the Second Temple in Jerusalem. What is it? It is the prayers of Israel at the time of the morning and evening sacrifices, and at the hour of the burning of incense, at 3:00 p.m.
27. Daniel prayed three times a day, precisely at the hours when the daily oblations were to be offered in the Temple. Ever since the destruction of the Second Temple and the Great Dispersion religious Jews have practiced Daniel’s continual mincha [morning and evening prayer services], even as it is written: