APA

Harrison R., Visser A., . (1985). Preliminary investigations into the applicability of available vehicle operating cost relations to South African conditions. Pretoria: National Institute for Transport and.

Chicago

Harrison R, Visser AT, . 1985. Preliminary investigations into the applicability of available vehicle operating cost relations to South African conditions. Pretoria: National Institute for Transport and.

Harvard

Harrison R., Visser A., . (1985). Preliminary investigations into the applicability of available vehicle operating cost relations to South African conditions. Pretoria: National Institute for Transport and.

MLA

Harrison R, Visser AT, . Preliminary investigations into the applicability of available vehicle operating cost relations to South African conditions. Pretoria: National Institute for Transport and. 1985.