APA (7th ed.) Citation

Bok, B. J. (1959). The astronomer's universe. Cambridge University Press.

Chicago Style (17th ed.) Citation

Bok, Bart J. The Astronomer's Universe. London, New York: Cambridge University Press, 1959.

MLA (9th ed.) Citation

Bok, Bart J. The Astronomer's Universe. Cambridge University Press, 1959.