Pohl, W. L. (2011). Economic geology principles and practice: Metals, minerals, coal and hydrocarbons - Introduction to formation and sustainable exploitation of mineral deposits. Wiley-Blackwell.
शिकागो स्टाइल उद्धरणPohl, Walter L. Economic Geology Principles and Practice: Metals, Minerals, Coal and Hydrocarbons - Introduction to Formation and Sustainable Exploitation of Mineral Deposits. Chichester: Wiley-Blackwell, 2011.
एमएलए उद्धरणPohl, Walter L. Economic Geology Principles and Practice: Metals, Minerals, Coal and Hydrocarbons - Introduction to Formation and Sustainable Exploitation of Mineral Deposits. Wiley-Blackwell, 2011.
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