Annual report of the Librarian of Congress for the fiscal year ended ...
APA Citation
Library of Congress. (1939). Annual report of the Librarian of Congress for the fiscal year ended ... [Departmental ed.] Washington: U.S. G.P.O..
MLA Citation
Library of Congress. Annual Report of the Librarian of Congress for the Fiscal Year Ended ... [Departmental ed.] Washington: U.S. G.P.O., 1939.
Warning: These citations may not always be complete (especially for serials).