APA-referens (7:e uppl.)

Charles, C. M. (1995). Introduction to educational research (2nd ed.). Longman Publishers USA.

Chicago-referens (17:e uppl.)

Charles, C. M. Introduction to Educational Research. 2nd ed. White Plains, N.Y.: Longman Publishers USA, 1995.

MLA-referens (9:e uppl.)

Charles, C. M. Introduction to Educational Research. 2nd ed. Longman Publishers USA, 1995.