APA aipamena

Asimov, I. (1962). The world of nitrogen. New York, N. Y.: Collier Books.

Chicago Style aipamena

Asimov, Isaac. The World of Nitrogen. New York, N. Y.: Collier Books, 1962.

MLA aipamena

Asimov, Isaac. The World of Nitrogen. New York, N. Y.: Collier Books, 1962.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.