APA (7th ed.) Citation

Barger, H. (1951). The transportation industries: 1889 - 1946 ; a study of output employment, and productivity. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Barger, Harold. The Transportation Industries: 1889 - 1946 ; a Study of Output Employment, and Productivity. New York: National Bureau of Economic Research, 1951.

MLA (9th ed.) Citation

Barger, Harold. The Transportation Industries: 1889 - 1946 ; a Study of Output Employment, and Productivity. National Bureau of Economic Research, 1951.