APA aipamena

DufferEric. (1974). Nature reserves and wildlife. Heinemann.

Chicago Style aipamena

DufferEric. Nature Reserves and Wildlife. Heinemann, 1974.

MLA aipamena

DufferEric. Nature Reserves and Wildlife. Heinemann, 1974.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.