Asimov, I. (1972). Asimov's guide to science. New York: Penguin Books.
Trích dẫn kiểu ChicagoAsimov, Isaac. Asimov's Guide to Science. New York: Penguin Books, 1972.
MLA引文Asimov, Isaac. Asimov's Guide to Science. New York: Penguin Books, 1972.
警告：这些引文格式不一定是100％准确.