APA (7th ed.) Citation

Bok, B. J., & Bok, P. F. (1957). The Milky Way (3d ed.). Harvard University Press.

Chicago Style (17th ed.) Citation

Bok, Bart J., and Priscilla Fairfield Bok. The Milky Way. 3d ed. Cambridge: Harvard University Press, 1957.

MLA (9th ed.) Citation

Bok, Bart J., and Priscilla Fairfield Bok. The Milky Way. 3d ed. Harvard University Press, 1957.