APA (7th ed.) Citation

Library of Congress, Goodrum, C. A., & Dalrymple, H. (1985). Guide to the Library of Congress ([Rev. and updated].). Library of Congress.

Chicago Style (17th ed.) Citation

Library of Congress, Charles A. Goodrum, and Helen Dalrymple. Guide to the Library of Congress. [Rev. and updated]. Washington: Library of Congress, 1985.

MLA (9th ed.) Citation

Library of Congress, et al. Guide to the Library of Congress. [Rev. and updated]. Library of Congress, 1985.