Dyfyniad APA

Herubin, C. (1978). Principles of surveying (2.). Reston publishers.

Dyfyniad Arddull Chicago

Herubin, C.A. Principles of Surveying. 2. Virginia: Reston publishers, 1978.

Dyfyniad MLA

Herubin, C.A. Principles of Surveying. 2. Reston publishers, 1978.

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