APA
Transport and Road Research Laboratory. Road note 39, . (1981). Recommendations for road surface dressing. Crowthorne: Transport and Road Research Laboratory. Road note 39.
Chicago
Transport and Road Research Laboratory. Road note 39, . 1981. Recommendations for road surface dressing. Crowthorne: Transport and Road Research Laboratory. Road note 39.
Harvard
Transport and Road Research Laboratory. Road note 39, . (1981). Recommendations for road surface dressing. Crowthorne: Transport and Road Research Laboratory. Road note 39.
MLA
Transport and Road Research Laboratory. Road note 39, . Recommendations for road surface dressing. Crowthorne: Transport and Road Research Laboratory. Road note 39. 1981.