APA-referens (7:e uppl.)

Johnson, E. S. (1956). Theory and practice of the social studies. Macmillan.

Chicago-referens (17:e uppl.)

Johnson, Earl Shepard. Theory and Practice of the Social Studies. New York: Macmillan, 1956.

MLA-referens (8:e uppl.)

Johnson, Earl Shepard. Theory and Practice of the Social Studies. Macmillan, 1956.