Yen, T. F. (1999). Environmental chemistry: Essentials of chemistry for engineering practice. New Jersey: Prentice-Hall.
शिकागो स्टाइल उद्धरणYen, Teh Fu. Environmental Chemistry: Essentials of Chemistry for Engineering Practice. New Jersey: Prentice-Hall, 1999.
एमएलए उद्धरणYen, Teh Fu. Environmental Chemistry: Essentials of Chemistry for Engineering Practice. New Jersey: Prentice-Hall, 1999.
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