APA

Philbrick M., . (1977). In search of a new capacity formula for conventional roundabouts. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 773.

Chicago

Philbrick MJ, . 1977. In search of a new capacity formula for conventional roundabouts. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 773.

Harvard

Philbrick M., . (1977). In search of a new capacity formula for conventional roundabouts. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 773.

MLA

Philbrick MJ, . In search of a new capacity formula for conventional roundabouts. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 773. 1977.