APA (7th ed.) Citation

Focillon, H., Bony, J., & King, D. (1969). The art of the West: In the Middle Ages (2nd ed.). Phaidon.

Chicago Style (17th ed.) Citation

Focillon, Henri, Jean Bony, and Donald King. The Art of the West: In the Middle Ages. 2nd ed. London: Phaidon, 1969.

MLA (9th ed.) Citation

Focillon, Henri, et al. The Art of the West: In the Middle Ages. 2nd ed. Phaidon, 1969.