Olphen, V. H. (1977). introduction to Clay Colloid Chemistry (2nd ed.). John Wiley.
Dyfyniad Arddull ChicagoOlphen, Van H. Introduction to Clay Colloid Chemistry. 2nd ed. New York: John Wiley, 1977.
Dyfyniad MLAOlphen, Van H. Introduction to Clay Colloid Chemistry. 2nd ed. John Wiley, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.