APA

Polak J. W., Hilton I. C. & Axhausen K. W. (1989). A review of parking guidance and information systems. Oxford: Oxford University. Transport Studies Unit.

Chicago

Polak John W, Hilton Ian C and Axhausen Kay W. 1989. A review of parking guidance and information systems. Oxford: Oxford University. Transport Studies Unit.

Harvard

Polak J. W., Hilton I. C. and Axhausen K. W. (1989). A review of parking guidance and information systems. Oxford: Oxford University. Transport Studies Unit.

MLA

Polak John W, Hilton Ian C and Axhausen Kay W. A review of parking guidance and information systems. Oxford: Oxford University. Transport Studies Unit. 1989.