APA استشهاد

Asimov, I. (1960). Asimov's new guide to science. Penguin Books.

استشهاد بنمط شيكاغو

Asimov, Isaac. Asimov's New Guide to Science. London: Penguin Books, 1960.

MLA استشهاد

Asimov, Isaac. Asimov's New Guide to Science. Penguin Books, 1960.