Cita APA

Asimov, I. (1979). Opus: A selection from the first 200 books. (6th ed.). London.

Chicago Edition Citation

Asimov, Isaac. Opus: A Selection from the First 200 Books. 6th ed. Granada: London, 1979.

Cita MLA

Asimov, Isaac. Opus: A Selection from the First 200 Books. 6th ed. London, 1979.