APA (7th ed.) Citation

Ritchie, A. C. (1957). German art of the twentieth century. Museum of Modern Art.

Chicago Style (17th ed.) Citation

Ritchie, Andrew Carnduff. German Art of the Twentieth Century. New York: Museum of Modern Art, 1957.

MLA (9th ed.) Citation

Ritchie, Andrew Carnduff. German Art of the Twentieth Century. Museum of Modern Art, 1957.

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