Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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