Dyfyniad APA

(2003). Guidelines for the use of GPS in surveying and mapping. RICS Books.

Dyfyniad Arddull Chicago

Guidelines for the Use of GPS in Surveying and Mapping. RICS Books, 2003.

Dyfyniad MLA

Guidelines for the Use of GPS in Surveying and Mapping. RICS Books, 2003.

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