APA (7th ed.) Citation

Library of Congress. Copyright Office. (1899). Services of agent not necessary. [publisher not identified].

Chicago Style (17th ed.) Citation

Library of Congress. Copyright Office. Services of Agent Not Necessary. Washington, D.C.: [publisher not identified], 1899.

MLA (9th ed.) Citation

Library of Congress. Copyright Office. Services of Agent Not Necessary. [publisher not identified], 1899.