APA (7th ed.) Citation

Locklin, D. P. (1954). Economics of transportation (4th ed.). R. D. Irwin.

Chicago Style (17th ed.) Citation

Locklin, David Philip. Economics of Transportation. 4th ed. Homewood: R. D. Irwin, 1954.

MLA (9th ed.) Citation

Locklin, David Philip. Economics of Transportation. 4th ed. R. D. Irwin, 1954.