Jones, N. W., & Jones, C. E. (2006). Laboratory manual for physical geology. New York: McGraw Hill.
Dyfyniad Arddull ChicagoJones, Norris W., và Charles E. Jones. Laboratory Manual for Physical Geology. New York: McGraw Hill, 2006.
Dyfyniad MLAJones, Norris W., và Charles E. Jones. Laboratory Manual for Physical Geology. New York: McGraw Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.