Cita APA (7th ed.)

Busby, R. L., & Technology, I. o. G. (1999). Natural gas in nontechnical language. Tulsa, OK : Pennwell.

Cita Chicago (17th ed.)

Busby, Rebecca L., i Institute of Gas Technology. Natural Gas in Nontechnical Language. Tulsa, OK : Pennwell, 1999.

Cita MLA (9th ed.)

Busby, Rebecca L., i Institute of Gas Technology. Natural Gas in Nontechnical Language. Tulsa, OK : Pennwell, 1999.