APA

Cooper B., Layfield R., . (1977). Bus priority at traffic signals terminating a contra-flow bus lane in Walsall. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 252.

Chicago

Cooper BR, Layfield RE, . 1977. Bus priority at traffic signals terminating a contra-flow bus lane in Walsall. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 252.

Harvard

Cooper B., Layfield R., . (1977). Bus priority at traffic signals terminating a contra-flow bus lane in Walsall. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 252.

MLA

Cooper BR, Layfield RE, . Bus priority at traffic signals terminating a contra-flow bus lane in Walsall. Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 252. 1977.