APA引文

Gupta, A. Billion is enough: India's population problem a way out. 2001.

Chicago Edition Citation

Gupta, Ashok. Billion Is Enough: India's Population Problem a Way Out. New Delhi: 2001.

MLA引文

Gupta, Ashok. Billion Is Enough: India's Population Problem a Way Out. 2001.

警告：这些引文格式不一定是100％准确.