Παραπομπή APA

Liebert, R. M. (1979). Developmental psychology (Ed2. 1977.). Prentice Hall of India.

Παραπομπή Chicago Style

Liebert, Robert M. Developmental Psychology. Ed2. 1977. New Delhi: Prentice Hall of India, 1979.

Παραπομπή MLA

Liebert, Robert M. Developmental Psychology. Ed2. 1977. Prentice Hall of India, 1979.