APA引文

Chopra, P. (1972). Pricing, distribution, welfare. Kalyani.

Chicago Edition Citation

Chopra, P.N. Pricing, Distribution, Welfare. Ludhiana: Kalyani, 1972.

MLA引文

Chopra, P.N. Pricing, Distribution, Welfare. Kalyani, 1972.

警告：这些引文格式不一定是100％准确.