Dyfyniad APA

Spellman, F. R. (2013). Environmental impacts of hydraulic fracturing. CRC.

Dyfyniad Arddull Chicago

Spellman, Frank R. Environmental Impacts of Hydraulic Fracturing. Boca Raton: CRC, 2013.

Dyfyniad MLA

Spellman, Frank R. Environmental Impacts of Hydraulic Fracturing. CRC, 2013.

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