Cita APA

Johnson, E. S. 1. (1956). Theory and practice of the social studies. New York: Macmillan Company.

Citación estilo Chicago

Johnson, Earl Shepard 1894-1986. Theory and Practice of the Social Studies. New York: Macmillan Company, 1956.

Cita MLA

Johnson, Earl Shepard 1894-1986. Theory and Practice of the Social Studies. New York: Macmillan Company, 1956.