APA-referens (7:e uppl.)

Ritchie, A. C. (1952). Sculpture of the twentieth century.

Chicago-referens (17:e uppl.)

Ritchie, Andrew Carnduff. Sculpture of the Twentieth Century. New York, 1952.

MLA-referens (8:e uppl.)

Ritchie, Andrew Carnduff. Sculpture of the Twentieth Century. 1952.