APA (7th ed.) Citation

(1942). The Library of Congress, Its Collections and Services, Second Edition, 1942. [s.n.].

Chicago Style (17th ed.) Citation

The Library of Congress, Its Collections and Services, Second Edition, 1942. [Washington]: [s.n.], 1942.

MLA (9th ed.) Citation

The Library of Congress, Its Collections and Services, Second Edition, 1942. [s.n.], 1942.