APA

United States, . (1931). Bureau of Foreign and Domestic Commerce, Travel Division: hearing, 71st Congress, 3d session, on H.R. 13553, to promote travel to and in United States and its possessions, thereby promoting American business, and to encourage foreign travel in United States, Jan. 23, 1931. [Washington, D.C.]: .

Chicago

United States, . 1931. Bureau of Foreign and Domestic Commerce, Travel Division: hearing, 71st Congress, 3d session, on H.R. 13553, to promote travel to and in United States and its possessions, thereby promoting American business, and to encourage foreign travel in United States, Jan. 23, 1931. [Washington, D.C.]: .

Harvard

United States, . (1931). Bureau of Foreign and Domestic Commerce, Travel Division: hearing, 71st Congress, 3d session, on H.R. 13553, to promote travel to and in United States and its possessions, thereby promoting American business, and to encourage foreign travel in United States, Jan. 23, 1931. [Washington, D.C.]: .

MLA

United States, . Bureau of Foreign and Domestic Commerce, Travel Division: hearing, 71st Congress, 3d session, on H.R. 13553, to promote travel to and in United States and its possessions, thereby promoting American business, and to encourage foreign travel in United States, Jan. 23, 1931. [Washington, D.C.]: . 1931.