Dyfyniad APA
Clancy John. (1981). Site surveying and levelling. Edward Arnold.
Dyfyniad Arddull Chicago
Clancy John. Site Surveying and Levelling. London: Edward Arnold, 1981.
Dyfyniad MLA
Clancy John. Site Surveying and Levelling. Edward Arnold, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.