APA (7th ed.) Zitazioa

Locklin, D. P. (1966). Economics of transportation. R. D. Irwin.

Chicago Style (17th ed.) Zitazioa

Locklin, David Philip. Economics of Transportation. Homewood: R. D. Irwin, 1966.

MLA (9th ed.) Zitazioa

Locklin, David Philip. Economics of Transportation. R. D. Irwin, 1966.