Παραπομπή APA

Kingsley, H. L. (1946). Nature and conditions of learning. Prentice-Hall, Inc.

Παραπομπή Chicago Style

Kingsley, Howard L. Nature and Conditions of Learning. New Jersey: Prentice-Hall, Inc, 1946.

Παραπομπή MLA

Kingsley, Howard L. Nature and Conditions of Learning. Prentice-Hall, Inc, 1946.