APA引文

Ashok Kumar, N. (1988). Economics of Bio-Gas Evaluation. The Times Research Foundation.

Chicago Edition Citation

Ashok Kumar, N. Economics of Bio-Gas Evaluation. Pune: The Times Research Foundation, 1988.

MLA引文

Ashok Kumar, N. Economics of Bio-Gas Evaluation. The Times Research Foundation, 1988.

警告：这些引文格式不一定是100％准确.