Cita APA (7a ed.)

Asimov, I. (1987). Asimov's new guide to science (4th ed.). Penguin Books.

Cita Chicago Style (17a ed.)

Asimov, Isaac. Asimov's New Guide to Science. 4th ed. London: Penguin Books, 1987.

Cita MLA (9a ed.)

Asimov, Isaac. Asimov's New Guide to Science. 4th ed. Penguin Books, 1987.