Cita APA

Ambasht, R., & Ambasht, P. (2012). Environment Polllution (4th.). CBS.

Chicago Edition Citation

Ambasht, RS, i PK Ambasht. Environment Polllution. 4th. New Delhi: CBS, 2012.

Cita MLA

Ambasht, RS, i PK Ambasht. Environment Polllution. 4th. CBS, 2012.