APA (7th ed.) Citation

Walters, A. A. (1970). The economics of road user charges. Johns Hopkins Press.

Chicago Style (17th ed.) Citation

Walters, Alan A. The Economics of Road User Charges. Baltimore, Md: Johns Hopkins Press, 1970.

MLA (9th ed.) Citation

Walters, Alan A. The Economics of Road User Charges. Johns Hopkins Press, 1970.