Παραπομπή APA

Heer, D. (1969). society and population. prentice hall of India.

Παραπομπή Chicago Style

Heer, D.M. Society and Population. New Delhi: prentice hall of India, 1969.

Παραπομπή MLA

Heer, D.M. Society and Population. prentice hall of India, 1969.