Asimov, I. (1972). Asimov's guide to science. New York: Penguin Books.
Chicago Style CitationAsimov, Isaac. Asimov's Guide to Science. New York: Penguin Books, 1972.
Cita MLAAsimov, Isaac. Asimov's Guide to Science. New York: Penguin Books, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.