Sixth National Conference on Clays and Clay Minerals. (1957). Clays and clay minerals. Pergamon Press.
Citazione stile Chigago Style (17a edizione)Sixth National Conference on Clays and Clay Minerals. Clays and Clay Minerals. New York: Pergamon Press, 1957.
Citatione MLA (9a ed.)Sixth National Conference on Clays and Clay Minerals. Clays and Clay Minerals. Pergamon Press, 1957.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.