APA (7th ed.) Citation

Christensen, E. O. (1959). The history of Western art. Mentor.

Chicago Style (17th ed.) Citation

Christensen, Erwin Ottomar. The History of Western Art. New York [etc.]: Mentor, 1959.

MLA (9th ed.) Citation

Christensen, Erwin Ottomar. The History of Western Art. Mentor, 1959.