APA (7th ed.) Citation
(1989). The world book encyclopedia of science: The heavens. World Book,Inc..
Chicago Style (17th ed.) Citation
The World Book Encyclopedia of Science: The Heavens. Chicago: World Book,Inc., 1989.
MLA (9th ed.) Citation
The World Book Encyclopedia of Science: The Heavens. World Book,Inc., 1989.
Warning: These citations may not always be 100% accurate.