Jackson, N. (1983). Civil engineering materials (3rd ed.). MacMillan.
Dyfyniad Arddull ChicagoJackson, N. Civil Engineering Materials. 3rd ed. London: MacMillan, 1983.
Dyfyniad MLAJackson, N. Civil Engineering Materials. 3rd ed. MacMillan, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.