Cita APA (7a ed.)

Library of Congress. (1939). Annual report of the Librarian of Congress for the fiscal year ended . U.S. Government Printing Office.

Cita Chicago Style (17a ed.)

Library of Congress. Annual Report of the Librarian of Congress for the Fiscal Year Ended . Washington: U.S. Government Printing Office, 1939.

Cita MLA (9a ed.)

Library of Congress. Annual Report of the Librarian of Congress for the Fiscal Year Ended . U.S. Government Printing Office, 1939.