APA aipamena

(1972). Vol. 227, № 6; Scientific American. 1972.

Chicago Style aipamena

Vol. 227, № 6; Scientific American. 1972, 1972.

MLA aipamena

Vol. 227, № 6; Scientific American. 1972, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.