APA (7th ed.) Citation

Bok, B. F. (1941). The milky way (third edition.). Harvard University Press.

Chicago Style (17th ed.) Citation

Bok, Bart F. The Milky Way. third edition. Cambridge: Harvard University Press, 1941.

MLA (8th ed.) Citation

Bok, Bart F. The Milky Way. third edition. Harvard University Press, 1941.