APA-referens (7:e uppl.)

Library of Congress. Classification Division, Martel, C., Schmidt, A. F. W., Perley, C. W., & MacNair, M. W. (1916). Classification. Government Printing Office.

Chicago-referens (17:e uppl.)

Library of Congress. Classification Division, Charles Martel, A. F. W. Schmidt, Clarence W. Perley, och Mary Wilson MacNair. Classification. Washington: Government Printing Office, 1916.

MLA-referens (8:e uppl.)

Library of Congress. Classification Division, et al. Classification. Government Printing Office, 1916.