APA aipamena

Sexena,M K. (2013). Biosphere as an Ecosystem. ALP.

Chicago Style aipamena

Sexena,M K. Biosphere as an Ecosystem. New Delhi: ALP, 2013.

MLA aipamena

Sexena,M K. Biosphere as an Ecosystem. ALP, 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.