APA引文

Ahluwalia, V. K. Environmental studies: Basic concepts. The Energy and Resources Institute.

Chicago Edition Citation

Ahluwalia, V K. Environmental Studies: Basic Concepts. New Delhi: The Energy and Resources Institute.

MLA引文

Ahluwalia, V K. Environmental Studies: Basic Concepts. The Energy and Resources Institute.

警告：這些引文格式不一定是100％准確.