APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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