Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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