Gaya APA

Pohl, W, L. (2005). Economic Geology Principles and Practice metals, minerals, coal and hydrocarbons-introduction to formation and sustainable exploitation of mineral deposits (E-Book) . United Kingdom: Wiley-Blackwell.

Gaya MLA

Pohl, Walter, L.. "Economic Geology Principles and Practice metals, minerals, coal and hydrocarbons-introduction to formation and sustainable exploitation of mineral deposits (E-Book)". United Kingdom: Wiley-Blackwell, 2005. Text.