Barry F Kavanagh. (1996). Surveying (Principles and applications). Upper Saddle River, New Jersey: Prentice-Hall.
Dyfyniad Arddull ChicagoBarry F Kavanagh. Surveying (Principles and Applications). Upper Saddle River, New Jersey: Prentice-Hall, 1996.
Dyfyniad MLABarry F Kavanagh. Surveying (Principles and Applications). Upper Saddle River, New Jersey: Prentice-Hall, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.