APA引文

Khanna, K. (1978). Economic and commercial geography. Sultan chand & co.

Chicago Edition Citation

Khanna, K.K. Economic and Commercial Geography. New Delhi: Sultan chand & co, 1978.

MLA引文

Khanna, K.K. Economic and Commercial Geography. Sultan chand & co, 1978.

警告：這些引文格式不一定是100％准確.