APA

Layfield R., Bardsley M., . (1977). Nottingham Zones and Collar study - results of the 'before' surveys. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 343.

Chicago

Layfield RE, Bardsley MD, . 1977. Nottingham Zones and Collar study - results of the 'before' surveys. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 343.

Harvard

Layfield R., Bardsley M., . (1977). Nottingham Zones and Collar study - results of the 'before' surveys. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 343.

MLA

Layfield RE, Bardsley MD, . Nottingham Zones and Collar study - results of the 'before' surveys. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 343. 1977.