APA

United States, . (1948). National transportation inquiry: hearings, 80th Congress, 2d session, on national transportation policy. [Washington, D.C.]: .

Chicago

United States, . 1948. National transportation inquiry: hearings, 80th Congress, 2d session, on national transportation policy. [Washington, D.C.]: .

Harvard

United States, . (1948). National transportation inquiry: hearings, 80th Congress, 2d session, on national transportation policy. [Washington, D.C.]: .

MLA

United States, . National transportation inquiry: hearings, 80th Congress, 2d session, on national transportation policy. [Washington, D.C.]: . 1948.