Carl Ratner 
Cultural Psychology, Cross-cultural Psychology, and Indigenous Psychology [PDF ebook] 

Cultural psychology, cross-cultural psychology, and indigenous psychology are the major psychological approaches to studying the relationship between culture and psychology. The three approaches have developed in relative isolation from each other, and each has accumulated a substantial corpus of theoretical and empirical work. This new book compares the similarities and differences of the three approaches, and it assesses their strengths and weaknesses.