Ingham, F. T., & Bradford, E. F. The geology and mineral resources of the Kinta Valley, Perak. Federation of Malaya, Geological Survey.
Dyfyniad Arddull ChicagoIngham, Frank Tinley, and Ernest Frederick Bradford. The Geology and Mineral Resources of the Kinta Valley, Perak. Kuala Lumpur: Federation of Malaya, Geological Survey.
Dyfyniad MLAIngham, Frank Tinley, and Ernest Frederick Bradford. The Geology and Mineral Resources of the Kinta Valley, Perak. Federation of Malaya, Geological Survey.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.