He mentions these three schools of thought, but he wrote no separated sections for each. I learned more about Gower and Quine's views on the three schools when reading his book (what was pretty cool). But to get good distinctions I would first recommend online encyclopedias (or specialized dictionaries), my text (haha), Max Black's The Nature of Mathematics (1933), and then a few articles.

Top-writer in Science. M.A. in Philosophy. Some of my favorite science fiction are Metropolis and King Kong. alexand3r.bird@gmail.com