Library of Congress. (1939). Annual report of the Librarian of Congress for the fiscal year ended . ([Departmental ed.].). U.S. G.P.O..
Chicago-viite (17. p.)Library of Congress. Annual Report of the Librarian of Congress for the Fiscal Year Ended . [Departmental ed.]. Washington: U.S. G.P.O., 1939.
MLA-viite (8. p.)Library of Congress. Annual Report of the Librarian of Congress for the Fiscal Year Ended . [Departmental ed.]. U.S. G.P.O., 1939.
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