What are the sources used for the questions?

Reference texts (Miller, etc), popular review texts (M&M, etc), ASA guidelines, review papers, and occasionally primary research. The explanations will help you decipher when multiple sources disagree with each other and what answer we feel is the most likely to be used or offer a short discussion regarding the controversy of the subject. Also, of note, these are the exact references that the question writers for the ABA written exam use as well!