APA (7th ed.) Citation

SPANGENBURG & MOSES. (1989). Opening the space frontier: Space exploration. Facts On File.

Chicago Style (17th ed.) Citation

SPANGENBURG and MOSES. Opening the Space Frontier: Space Exploration. New York: Facts On File, 1989.

MLA (8th ed.) Citation

SPANGENBURG and MOSES. Opening the Space Frontier: Space Exploration. Facts On File, 1989.

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