As some of you may know, I have been studying the Trinity rather extensively recently, and not just because it is important in the FV discussions. I have always loved this doctrine with my entire soul. So, I thought I’d put together a list of some of the more important books on the Trinity. In my opinion, the two most important are this book (volume 4 of the set) and this book. They complement each other very well, since one is a general historical, doctrinal study that does not pay much of any attention to the post-Reformation tradition, and the other fills that gap magnificently. So, if you read those two together, you will quite likely have a very adequte understanding of the Trinity, both in the Bible, and in church history (not to mention modern studies, as well!). For rounding out a yet more fully orbed study, I would recommend Augustine, Torrance, this book, which is a very nice collection of essays, and Aquinas. Yes, we should not neglect the Roman Catholics on the doctrine of the Trinity, because this is something we hold in common with them, and some of the more important theological reflection on the Trinity recently has been by Catholics (such as Rahner). For understanding the Trinity in the discussion of the FV, you need to start with Ralph Smith’s books here, here, and here. For modern feminist understandings of the Trinity, one could go with Lacugna. One cannot leave out Moltmann in modern discussion, or Pannenberg.
Some Important Books on the Trinity