APA

Maree J., Freeme C., Zyl N. v. & Savage P.Permanent deformation of pavements with untreated crushed-stone bases as measured in Heavy Vehicle Simulator tests. Pretoria: National Institute for Transport and Road Research. Research paper RR 355.

Chicago

Maree JH, Freeme CR, Zyl NJ van and Savage PF.Permanent deformation of pavements with untreated crushed-stone bases as measured in Heavy Vehicle Simulator tests. Pretoria: National Institute for Transport and Road Research. Research paper RR 355.

Harvard

Maree J., Freeme C., Zyl N. v. and Savage P.Permanent deformation of pavements with untreated crushed-stone bases as measured in Heavy Vehicle Simulator tests. Pretoria: National Institute for Transport and Road Research. Research paper RR 355.

MLA

Maree JH, Freeme CR, Zyl NJ van and Savage PF.Pretoria: National Institute for Transport and Road Research. Research paper RR 355. .