Παραπομπή APA

Bigner, J. J. (1983). Human development: A life-span approach. Mac millan publishing Co.

Παραπομπή Chicago Style

Bigner, Jerry J. Human Development: A Life-span Approach. New York: Mac millan publishing Co, 1983.

Παραπομπή MLA

Bigner, Jerry J. Human Development: A Life-span Approach. Mac millan publishing Co, 1983.