Nettleton, L. L. (1976). Gravity and Magnetics in Oil Prospecting. McGraw-Hill.
Dyfyniad Arddull ChicagoNettleton, Lewis Lomat. Gravity and Magnetics in Oil Prospecting. New York: McGraw-Hill, 1976.
Dyfyniad MLANettleton, Lewis Lomat. Gravity and Magnetics in Oil Prospecting. McGraw-Hill, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.