APA (7th ed.) Citation

Locklin, D. P. (1938). Economics of transportation (Rev. ed.). Business publications, inc..

Chicago Style (17th ed.) Citation

Locklin, D. Philip. Economics of Transportation. Rev. ed. Chicago: Business publications, inc., 1938.

MLA (8th ed.) Citation

Locklin, D. Philip. Economics of Transportation. Rev. ed. Business publications, inc., 1938.