Swineford, A. (1962). Clays and clay minerals: :Proceedings of the ninth national conference.v.9. Pergamon Press.
Dyfyniad Arddull ChicagoSwineford, Ada. Clays and Clay Minerals: :Proceedings of the Ninth National Conference.v.9. New York: Pergamon Press, 1962.
Dyfyniad MLASwineford, Ada. Clays and Clay Minerals: :Proceedings of the Ninth National Conference.v.9. Pergamon Press, 1962.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.