APA (7th ed.) Citation

Library of Congress. Subject Cataloging Division, Koenig, W. F., Martel, C., & Perley, C. W. (1936). Classification. United States Government Printing Office.

Chicago Style (17th ed.) Citation

Library of Congress. Subject Cataloging Division, W. F. Koenig, Charles Martel, and Clarence W. Perley. Classification. Washington: United States Government Printing Office, 1936.

MLA (8th ed.) Citation

Library of Congress. Subject Cataloging Division, et al. Classification. United States Government Printing Office, 1936.