Cita APA (7th ed.)

Santra, S. C. (2011). Environmental science (3rd ed.). New Central Book Agency.

Cita Chicago (17th ed.)

Santra, S. C. Environmental Science. 3rd ed. Kolkata: New Central Book Agency, 2011.

Cita MLA (9th ed.)

Santra, S. C. Environmental Science. 3rd ed. New Central Book Agency, 2011.