Dyfyniad APA

Vernon, R. C. (1997). Professional surveyor's manual. McGraw-Hill.

Dyfyniad Arddull Chicago

Vernon, Robert C. Professional Surveyor's Manual. New York: McGraw-Hill, 1997.

Dyfyniad MLA

Vernon, Robert C. Professional Surveyor's Manual. McGraw-Hill, 1997.

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