APA

Oliver J., Witt H., . (1978). Detailed procedures for calibration of the British portable skid resistance tester. Vermont, Vict: Australian Road Research Board. Technical Manual no 6.

Chicago

Oliver JWH, Witt HP, . 1978. Detailed procedures for calibration of the British portable skid resistance tester. Vermont, Vict: Australian Road Research Board. Technical Manual no 6.

Harvard

Oliver J., Witt H., . (1978). Detailed procedures for calibration of the British portable skid resistance tester. Vermont, Vict: Australian Road Research Board. Technical Manual no 6.

MLA

Oliver JWH, Witt HP, . Detailed procedures for calibration of the British portable skid resistance tester. Vermont, Vict: Australian Road Research Board. Technical Manual no 6. 1978.