APA aipamena

George W Cox. (1979). Agricultural ecology. San Francisco: W.H.Freeman and Company.

Chicago Style aipamena

George W Cox. Agricultural Ecology. San Francisco: W.H.Freeman and Company, 1979.

MLA aipamena

George W Cox. Agricultural Ecology. San Francisco: W.H.Freeman and Company, 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.