Cita APA (7th ed.)

(2008). Down to Earth Nos. 16-24. Society for Environmental Communication.

Cita Chicago (17th ed.)

Down to Earth Nos. 16-24. New Delhi: Society for Environmental Communication, 2008.

Cita MLA (9th ed.)

Down to Earth Nos. 16-24. Society for Environmental Communication, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.