APA aipamena

Walters, A. A. (1968). The economics of road user charges. International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press, Baltimore.

Chicago Style aipamena

Walters, A. A. The Economics of Road User Charges. [Washington,: International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press, Baltimore, 1968.

MLA aipamena

Walters, A. A. The Economics of Road User Charges. International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press, Baltimore, 1968.