APA (7th ed.) Citation

Keller, H. L., & Cichy, B. (1957). 20 centuries of great European painting: A collection of masterpieces. Sterling Pub. Co..

Chicago Style (17th ed.) Citation

Keller, Hiltgart Leu, and Bodo Cichy. 20 Centuries of Great European Painting: A Collection of Masterpieces. New York: Sterling Pub. Co., 1957.

MLA (9th ed.) Citation

Keller, Hiltgart Leu, and Bodo Cichy. 20 Centuries of Great European Painting: A Collection of Masterpieces. Sterling Pub. Co., 1957.