Dyfyniad APA
(1978). Soil manuals for the design of asphalt pavement structures (2 nd ed.). The Asphalt Institute.
Dyfyniad Arddull Chicago
Soil Manuals for the Design of Asphalt Pavement Structures. 2 nd ed. USA: The Asphalt Institute, 1978.
Dyfyniad MLA
Soil Manuals for the Design of Asphalt Pavement Structures. 2 nd ed. The Asphalt Institute, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.