* Ahmed Al-Jubori,. Sean Johnston. (2009). Coalbed Methane: Clean Energy for the World Chapter 3 Characteristics of Coalbed Methane Production and Associated Hydraulic Fracturing Practices
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* Al-Jubori, A., and S. Johnston, 2009, Coalbed Methane: Clean Energy for the World, ''in'' Characteristics of Coalbed Methane Production and Associated Hydraulic Fracturing Practices
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* Fatahillah, Mohammad Rusydi. (2011) Efek Teknik Hydraulic Fracturing dalam Eksplorasi Shale Gas di Amerika Serikat
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* Fatahillah, M. R., 2011, Efek Teknik Hydraulic Fracturing dalam Eksplorasi Shale Gas di Amerika Serikat
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* Hal Macartney. (2011). EPA Hydraulic Fracturing Workshop: Hydraulic Fracturing in Coalbed Methane Development Raton Basin, Southern Colorado
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* Hal Macartney, 2011, EPA Hydraulic Fracturing Workshop: Hydraulic Fracturing, ''in'' Coalbed Methane Development Raton Basin, Southern Colorado