APA aipamena

Raven, P. H., & Berg, L. R. (2004). Environment (4th ed.). John Wiley & Sons.

Chicago Style aipamena

Raven, Peter H., and Linda R. Berg. Environment. 4th ed. John Wiley & Sons, 2004.

MLA aipamena

Raven, Peter H., and Linda R. Berg. Environment. 4th ed. John Wiley & Sons, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.