Παραπομπή APA

Hurlock, E. B. (1981). Developmental psychology: A life-span approach (Ed.5.).

Παραπομπή Chicago Style

Hurlock, Elizabeth B. Developmental Psychology: A Life-span Approach. Ed.5. New Delhi, Tata McGraw Hill, 1981.

Παραπομπή MLA

Hurlock, Elizabeth B. Developmental Psychology: A Life-span Approach. Ed.5. 1981.