APA

Salt G., . (1977). Research on skid-resistance at the Transport and Road Research Laboratory (1927-1977). Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 340.

Chicago

Salt GF, . 1977. Research on skid-resistance at the Transport and Road Research Laboratory (1927-1977). Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 340.

Harvard

Salt G., . (1977). Research on skid-resistance at the Transport and Road Research Laboratory (1927-1977). Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 340.

MLA

Salt GF, . Research on skid-resistance at the Transport and Road Research Laboratory (1927-1977). Crowthorne: Transport and Road Research Laboratory. Suppl. report nr 340. 1977.