APA

United States, United States & United States. (1972). The railroad retirement system: economic analysis of the future outlook for the railroad industry and its ability to support the system : staff papers supporting the Report to the President and the Congress by the Commission on Railroad Retirement. Washington, D.C: U.S. G.P.O.

Chicago

United States, United States and United States. 1972. The railroad retirement system: economic analysis of the future outlook for the railroad industry and its ability to support the system : staff papers supporting the Report to the President and the Congress by the Commission on Railroad Retirement. Washington, D.C: U.S. G.P.O.

Harvard

United States, United States and United States. (1972). The railroad retirement system: economic analysis of the future outlook for the railroad industry and its ability to support the system : staff papers supporting the Report to the President and the Congress by the Commission on Railroad Retirement. Washington, D.C: U.S. G.P.O.

MLA

United States, United States and United States. The railroad retirement system: economic analysis of the future outlook for the railroad industry and its ability to support the system : staff papers supporting the Report to the President and the Congress by the Commission on Railroad Retirement. Washington, D.C: U.S. G.P.O. 1972.