There is a 400 plus page book on the Modern Vienna published by Chess Stars from about 5 years ago, but from what I heard, it sounds like it mostly covers Bc4 lines - 1.e4 e5 2.Nc3 Nf6 3.Bc4 and 1.e4 e5 2.Nc3 Nc6 3.Bc4, and not so much the 3.f4 or 3.g3 lines.
Only other book I know of, which I have this one, is the old book by Gary Lane from 2000 published by Everyman.
Anyone know any books about the Vienna Game Opening? (1.e4 e5 2.Nc3 Nf6. 3.f4). I'm struggling to find anything about it and am interested in learning the opening.