Dyfyniad APA

Robinson, R. (1981). The selection of geometric design standards for rural roads in developing countries. Transport and Road Research Laboratory.

Dyfyniad Arddull Chicago

Robinson, R. The Selection of Geometric Design Standards for Rural Roads in Developing Countries. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.

Dyfyniad MLA

Robinson, R. The Selection of Geometric Design Standards for Rural Roads in Developing Countries. Transport and Road Research Laboratory, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.