APA (7th ed.) Citation

Asimov, I. (1991). Isaac Asimov's guide to earth and space. Random House.

Chicago Style (17th ed.) Citation

Asimov, Isaac. Isaac Asimov's Guide to Earth and Space. New York: Random House, 1991.

MLA (9th ed.) Citation

Asimov, Isaac. Isaac Asimov's Guide to Earth and Space. Random House, 1991.

Warning: These citations may not always be 100% accurate.