Principles of educational psychology

MLA

Commins, William Dollard. Principles of Educational Psychology. 3rd ed. New York: The Ronald press company, 1937.

APA

Commins, W. Dollard. (1937). Principles of educational psychology. 3rd ed. New York: The Ronald press company.

Chicago

Commins, William Dollard, Principles of Educational Psychology. 3rd ed. New York: The Ronald press company, 1937.