APA (7th ed.) Citation

Kopal, Z. (1959). Close binary systems. Wiley.

Chicago Style (17th ed.) Citation

Kopal, Zdeněk. Close Binary Systems. New York: Wiley, 1959.

MLA (9th ed.) Citation

Kopal, Zdeněk. Close Binary Systems. Wiley, 1959.

Warning: These citations may not always be 100% accurate.