To help your readers, cite specific parts of a source at the appropriate place in your text. Remember to always give page numbers for quotations. Abbreviate page or pages (p. and pp.) but write out the word Chapter.
(Centers for Disease Control and Prevention, 2005, p. 1 0)
(Shimamura, 1989, Chapter 3)
(American Psychological Association, 2010, p. 179)