APA

Preston R. C., Herman W. L., . (1981). Teaching social studies in the elementary school. New York: Rinehart and Co.

Chicago

Preston Ralph Clausius, Herman Wayne L, . 1981. Teaching social studies in the elementary school. New York: Rinehart and Co.

Harvard

Preston R. C., Herman W. L., . (1981). Teaching social studies in the elementary school. New York: Rinehart and Co.

MLA

Preston Ralph Clausius, Herman Wayne L, . Teaching social studies in the elementary school. New York: Rinehart and Co. 1981.