APA

Transport and Road Research Laboratory, TRRL Report 87.15 11.522/7259, .Study of the improvements and additions to be made to the procedure for the official approval of vehicle noise level. Crowthorne: Transport and Road Research Laboratory.

Chicago

Transport and Road Research Laboratory, TRRL Report 87.15 11.522/7259, .Study of the improvements and additions to be made to the procedure for the official approval of vehicle noise level. Crowthorne: Transport and Road Research Laboratory.

Harvard

Transport and Road Research Laboratory, TRRL Report 87.15 11.522/7259, .Study of the improvements and additions to be made to the procedure for the official approval of vehicle noise level. Crowthorne: Transport and Road Research Laboratory.

MLA

Transport and Road Research Laboratory, TRRL Report 87.15 11.522/7259, .Crowthorne: Transport and Road Research Laboratory. .