Dyfyniad APA

Library, 1. L. I. I. Surveying: Theory and practice. Philadelphia, Pa. : Lefax.

Dyfyniad Arddull Chicago

Library, 11674 Lefax Instant Information. Surveying: Theory and Practice. Philadelphia, Pa. : Lefax.

Dyfyniad MLA

Library, 11674 Lefax Instant Information. Surveying: Theory and Practice. Philadelphia, Pa. : Lefax.

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