APA (7th ed.) Citation

Christianson, G. E. (1978). This wild abyss: The story of the men who made modern astronomy. Free Press.

Chicago Style (17th ed.) Citation

Christianson, Gale E. This Wild Abyss: The Story of the Men Who Made Modern Astronomy. New York: Free Press, 1978.

MLA (8th ed.) Citation

Christianson, Gale E. This Wild Abyss: The Story of the Men Who Made Modern Astronomy. Free Press, 1978.