United States. Congress. House. Committee on Merchant Marine and Fisheries & ProQuest (Firm). (1939). Making Radio Operators Licensed Officers: Hearings before the United States House Committee on Merchant Marine and Fisheries, Seventy-Sixth Congress, first session, on Apr. 5, 1939. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Merchant Marine and Fisheries and ProQuest (Firm). Making Radio Operators Licensed Officers: Hearings Before the United States House Committee on Merchant Marine and Fisheries, Seventy-Sixth Congress, First Session, on Apr. 5, 1939. Washington: U.S. G.P.O., 1939.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Merchant Marine and Fisheries and ProQuest (Firm). Making Radio Operators Licensed Officers: Hearings Before the United States House Committee on Merchant Marine and Fisheries, Seventy-Sixth Congress, First Session, on Apr. 5, 1939. U.S. G.P.O., 1939.