APA aipamena

Asimov, I. (1997). The caves of steel. HarperCollins Publishers.

Chicago Style aipamena

Asimov, Isaac. The Caves of Steel. London: HarperCollins Publishers, 1997.

MLA aipamena

Asimov, Isaac. The Caves of Steel. HarperCollins Publishers, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.