APA (7th ed.) Citation

Moore, P. (1987). The International encyclopedia of Astronomy. Orion Books.

Chicago Style (17th ed.) Citation

Moore, Patrick. The International Encyclopedia of Astronomy. New York: Orion Books, 1987.

MLA (9th ed.) Citation

Moore, Patrick. The International Encyclopedia of Astronomy. Orion Books, 1987.

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