APA aipamena

Prabhakar, V. (2004). Environmental education.

Chicago Style aipamena

Prabhakar, VK. Environmental Education. NewDelhi, Anmol, 2004.

MLA aipamena

Prabhakar, VK. Environmental Education. 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.