Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.