Παραπομπή APA

Chopra, P. N. (1975). Gazetter of India, Vol.3: Economic structure and activities.

Παραπομπή Chicago Style

Chopra, P N. Gazetter of India, Vol.3: Economic Structure and Activities. Government of India, 1975.

Παραπομπή MLA

Chopra, P N. Gazetter of India, Vol.3: Economic Structure and Activities. 1975.