Dyfyniad APA
Clark, D. (1983). Plane and geodetic surveying (6th rev.). CBS Pub.
Dyfyniad Arddull Chicago
Clark, David. Plane and Geodetic Surveying. 6th rev. Delhi: CBS Pub, 1983.
Dyfyniad MLA
Clark, David. Plane and Geodetic Surveying. 6th rev. CBS Pub, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.