Dyfyniad APA

Hobbs, F., & Doling, J. F. (1981). Planning for engineers and surveyors. Pergamon Press.

Dyfyniad Arddull Chicago

Hobbs, F.D, and J F. Doling. Planning for Engineers and Surveyors. Oxford: Pergamon Press, 1981.

Dyfyniad MLA

Hobbs, F.D, and J F. Doling. Planning for Engineers and Surveyors. Pergamon Press, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.