APA

United States, . (1919). E.M. Boynton single-track railway patents as applicable to present systems of railway transportation: hearings on H.R. 12870, Feb. 15, 1919. [Washington, D.C.]: .

Chicago

United States, . 1919. E.M. Boynton single-track railway patents as applicable to present systems of railway transportation: hearings on H.R. 12870, Feb. 15, 1919. [Washington, D.C.]: .

Harvard

United States, . (1919). E.M. Boynton single-track railway patents as applicable to present systems of railway transportation: hearings on H.R. 12870, Feb. 15, 1919. [Washington, D.C.]: .

MLA

United States, . E.M. Boynton single-track railway patents as applicable to present systems of railway transportation: hearings on H.R. 12870, Feb. 15, 1919. [Washington, D.C.]: . 1919.