Dyfyniad APA
Jackson, N., & Dhir R.K. (1988). Civil engineering materials (4th ed.). Macmillan.
Dyfyniad Arddull Chicago
Jackson, N., and Dhir R.K. Civil Engineering Materials. 4th ed. London: Macmillan, 1988.
Dyfyniad MLA
Jackson, N., and Dhir R.K. Civil Engineering Materials. 4th ed. Macmillan, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.