APA引文

Lakshman Singh. (2000). Oil and gas fields of India. Indian petroleum publishers.

Chicago Edition Citation

Lakshman Singh. Oil and Gas Fields of India. Dehradun: Indian petroleum publishers, 2000.

MLA引文

Lakshman Singh. Oil and Gas Fields of India. Indian petroleum publishers, 2000.

警告：這些引文格式不一定是100％准確.