Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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