APA (7th ed.) Citation

Kessler, C. S., & Beckmann, M. (1970). Max Beckmann's triptychs. Belknap Press.

Chicago Style (17th ed.) Citation

Kessler, Charles S., and Max Beckmann. Max Beckmann's Triptychs. Cambridge, Mass: Belknap Press, 1970.

MLA (9th ed.) Citation

Kessler, Charles S., and Max Beckmann. Max Beckmann's Triptychs. Belknap Press, 1970.

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