APA

Marais C., Freeme C., . (1977). Performance study of asphalt pavement with bituminous-stabilized-sand bases. Pretoria: National Institute for Transport and Road Research. RR no 233.

Chicago

Marais CP, Freeme CF, . 1977. Performance study of asphalt pavement with bituminous-stabilized-sand bases. Pretoria: National Institute for Transport and Road Research. RR no 233.

Harvard

Marais C., Freeme C., . (1977). Performance study of asphalt pavement with bituminous-stabilized-sand bases. Pretoria: National Institute for Transport and Road Research. RR no 233.

MLA

Marais CP, Freeme CF, . Performance study of asphalt pavement with bituminous-stabilized-sand bases. Pretoria: National Institute for Transport and Road Research. RR no 233. 1977.