Citazione Stile APA (7a Edizione)

Jeffery, D. J. (1981). Ways and means for improving driver route guidance. Transport and Road Research Laboratory.

Citazione stile Chigago Style (17a edizione)

Jeffery, D. J. Ways and Means for Improving Driver Route Guidance. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.

Citatione MLA (9a ed.)

Jeffery, D. J. Ways and Means for Improving Driver Route Guidance. Transport and Road Research Laboratory, 1981.