Cita APA

Wadhwa,, Y. (2009). Air pollution: Causes and control. Cyber Tech.

Chicago Edition Citation

Wadhwa,, Yashpal. Air Pollution: Causes and Control. New Delhi: Cyber Tech, 2009.

Cita MLA

Wadhwa,, Yashpal. Air Pollution: Causes and Control. Cyber Tech, 2009.