APA aipamena

Peter H. Raven. Biology. Boston: McGraw-Hill, Higher Education.

Chicago Style aipamena

Peter H. Raven. Biology. Boston: McGraw-Hill, Higher Education.

MLA aipamena

Peter H. Raven. Biology. Boston: McGraw-Hill, Higher Education.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.