Cita APA (7a ed.)

Delvin, S. (2007). environmental problems and issues. Sarup.

Cita Chicago Style (17a ed.)

Delvin, Samuel. Environmental Problems and Issues. New Delhi: Sarup, 2007.

Cita MLA (9a ed.)

Delvin, Samuel. Environmental Problems and Issues. Sarup, 2007.

Precaución: Estas citas no son 100% exactas.