APA aipamena

(1973). last two million years: History of man. Readers Digest Association.

Chicago Style aipamena

Last Two Million Years: History of Man. London: Readers Digest Association, 1973.

MLA aipamena

Last Two Million Years: History of Man. Readers Digest Association, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.