Cita APA (7a ed.)

Bok, B. J., & Bok, P. F. (1957). The milky way (3th ed.). Harvard University Press.

Cita Chicago Style (17a ed.)

Bok, Bart J., y Priscilla F. Bok. The Milky Way. 3th ed. Cambridge, Masachussetts: Harvard University Press, 1957.

Cita MLA (9a ed.)

Bok, Bart J., y Priscilla F. Bok. The Milky Way. 3th ed. Harvard University Press, 1957.