I find myself most drawn to his arguments. Ward, Peter D. 1997. The Call of Distant Mammoths. Copernicus Press, New York. Ward spends a large amount of time introducing basic ecological and geological concepts before finally examining the Pleistocene extinction events.
Topics range from time travel to natural selection.
Toward the end of the book, he explores new analysis techniques but does not reference them. I found this text to be a good overview of the literature, but not a very efficient one. Lister, Adrian and Bahn, Paul. Macmillan, New York. In this coffee table text, a description of mammoth fossils and natural history is followed by a discussion of the extinction theories.