What are the best repertoire books for White with the English Opening? What are the best repertoire books, from White's point of view, with the English Opening?
In the Grandmaster Repertoire series, there are three books covering the English opening from white's perspective, written by GM Marin in 2009 and 2010: Volume 1, Volume 2 and Volume 3.

More recently, in 2016, IM Cummings wrote a repertoire book based on e3 systems, rather than fianchettoing the bishop with g3.

Update: In 2018, a new repertoire series from white's point of view is published: The Modern English, written by GM Georgiev and IM Semkov. In Volume 1, the authors discuss 1.c4 e5.