Dyfyniad APA
Smith G Chrystal. (1976). Estimating for building and civil engineering works (6 th ed.). Newnes - Butter Worth.
Dyfyniad Arddull Chicago
Smith G Chrystal. Estimating for Building and Civil Engineering Works. 6 th ed. London: Newnes - Butter Worth, 1976.
Dyfyniad MLA
Smith G Chrystal. Estimating for Building and Civil Engineering Works. 6 th ed. Newnes - Butter Worth, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.