APA (7th ed.) Citation

De Tolnay, C. (1972). History and technique of old master drawings: A handbook. Hacker Art Books.

Chicago Style (17th ed.) Citation

De Tolnay, Charles. History and Technique of Old Master Drawings: A Handbook. New York: Hacker Art Books, 1972.

MLA (9th ed.) Citation

De Tolnay, Charles. History and Technique of Old Master Drawings: A Handbook. Hacker Art Books, 1972.