Olphen, V. H. (1977). introduction to Clay Colloid Chemistry (2nd ed.). John Wiley.
शिकागो स्टाइल उद्धरणOlphen, Van H. Introduction to Clay Colloid Chemistry. 2nd ed. New York: John Wiley, 1977.
एमएलए उद्धरणOlphen, Van H. Introduction to Clay Colloid Chemistry. 2nd ed. John Wiley, 1977.
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