APA (7th ed.) Citation

Library of Congress. Copyright Office. (1931). Assignment or transfer of copyright. U.S. GPO.

Chicago Style (17th ed.) Citation

Library of Congress. Copyright Office. Assignment or Transfer of Copyright. Washington: U.S. GPO, 1931.

MLA (9th ed.) Citation

Library of Congress. Copyright Office. Assignment or Transfer of Copyright. U.S. GPO, 1931.

Warning: These citations may not always be 100% accurate.