APA

Leonardo, Popham A. E. & Rouben Mamoulian Collection (Library of Congress). (1945). The drawings of Leonardo da Vinci. New York: Reynal & Hitchcock.

Chicago

Leonardo, Popham A E and Rouben Mamoulian Collection (Library of Congress). 1945. The drawings of Leonardo da Vinci. New York: Reynal & Hitchcock.

Harvard

Leonardo, Popham A. E. and Rouben Mamoulian Collection (Library of Congress). (1945). The drawings of Leonardo da Vinci. New York: Reynal & Hitchcock.

MLA

Leonardo, Popham A E and Rouben Mamoulian Collection (Library of Congress). The drawings of Leonardo da Vinci. New York: Reynal & Hitchcock. 1945.