APA (7th ed.) Citation

Bok, B. J., & Bok, P. F. (1974). The milky way (4.ed., rev. and enl.). Harvard Univ. Press.

Chicago Style (17th ed.) Citation

Bok, Bart Jan, and Priscilla F. Bok. The Milky Way. 4.ed., rev. and enl. Cambridge, Mass: Harvard Univ. Press, 1974.

MLA (9th ed.) Citation

Bok, Bart Jan, and Priscilla F. Bok. The Milky Way. 4.ed., rev. and enl. Harvard Univ. Press, 1974.