Cita APA (7th ed.)

Thakur, P. (2007). Environmental studies. ABD Publ.

Cita Chicago (17th ed.)

Thakur, P. Environmental Studies. Jaipur: ABD Publ, 2007.

Cita MLA (9th ed.)

Thakur, P. Environmental Studies. ABD Publ, 2007.