(1976). Peraturan Perencanaan Geometrik Jalan Raya: Standard Specifications For Geometric Design Of Rural Highways No.13/1970. Direktorat Jenderal Bina Marga.
Dyfyniad Arddull ChicagoPeraturan Perencanaan Geometrik Jalan Raya: Standard Specifications For Geometric Design Of Rural Highways No.13/1970. Direktorat Jenderal Bina Marga, 1976.
Dyfyniad MLAPeraturan Perencanaan Geometrik Jalan Raya: Standard Specifications For Geometric Design Of Rural Highways No.13/1970. Direktorat Jenderal Bina Marga, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.