APA (7th ed.) Citation

Bok, B. J., & Bok, P. F. (1981). The Milky Way (5th ed.). Harvard University Press.

Chicago Style (17th ed.) Citation

Bok, Bart Jan, and Priscilla Fairfield Bok. The Milky Way. 5th ed. Cambridge, Mass: Harvard University Press, 1981.

MLA (9th ed.) Citation

Bok, Bart Jan, and Priscilla Fairfield Bok. The Milky Way. 5th ed. Harvard University Press, 1981.