APA (7th ed.) Citation

Library of Congress. Classification Division & Schmidt, A. F. W. (1921). Classification. Government Printing Office, Library Branch.

Chicago Style (17th ed.) Citation

Library of Congress. Classification Division and A. F. W. Schmidt. Classification. Washington: Government Printing Office, Library Branch, 1921.

MLA (8th ed.) Citation

Library of Congress. Classification Division and A. F. W. Schmidt. Classification. Government Printing Office, Library Branch, 1921.