APA

Kleyn E., Maree J. & Savage P. (1982). Application of a portable pavement dynamic cone penetrometer to determine in situ bearing properties of road pavement layers and subgrades in South Africa. Pretoria: National Institute for Transport and Road Research. Research paper. RR 360.

Chicago

Kleyn EG, Maree JH and Savage PF. 1982. Application of a portable pavement dynamic cone penetrometer to determine in situ bearing properties of road pavement layers and subgrades in South Africa. Pretoria: National Institute for Transport and Road Research. Research paper. RR 360.

Harvard

Kleyn E., Maree J. and Savage P. (1982). Application of a portable pavement dynamic cone penetrometer to determine in situ bearing properties of road pavement layers and subgrades in South Africa. Pretoria: National Institute for Transport and Road Research. Research paper. RR 360.

MLA

Kleyn EG, Maree JH and Savage PF. Application of a portable pavement dynamic cone penetrometer to determine in situ bearing properties of road pavement layers and subgrades in South Africa. Pretoria: National Institute for Transport and Road Research. Research paper. RR 360. 1982.