APA-referens (7:e uppl.)

Charles, C. M. (1976). Educational psychology: The instructional endeavor (2d ed.). Mosby.

Chicago-referens (17:e uppl.)

Charles, C. M. Educational Psychology: The Instructional Endeavor. 2d ed. Saint Louis: Mosby, 1976.

MLA-referens (9:e uppl.)

Charles, C. M. Educational Psychology: The Instructional Endeavor. 2d ed. Mosby, 1976.