Drawings of the Masters : : 20th Century Drawings ; Part I: 1900-1940.

MLA

Johnson, Una E. Drawings of the Masters : 20th Century Drawings ; Part I: 1900-1940. London: Weidenfeld and Nicolson, 1964.

APA

Johnson, U. E. (1964). Drawings of the Masters : 20th Century Drawings ; Part I: 1900-1940. London: Weidenfeld and Nicolson.

Chicago

Johnson, Una E. Drawings of the Masters: 20th Century Drawings ; Part I: 1900-1940. London: Weidenfeld and Nicolson, 1964.