APA aipamena

Singh, H. R. (2005). Environmental biology. S.Chand.

Chicago Style aipamena

Singh, H. R. Environmental Biology. S.Chand, 2005.

MLA aipamena

Singh, H. R. Environmental Biology. S.Chand, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.