Cita APA (7a ed.)
Leffler, W. L., & Womack, K. (2014). Natural gas liquids: A nontechnical guide. PennWell Corporation.
Cita Chicago Style (17a ed.)
Leffler, William L., y Karla Womack. Natural Gas Liquids: A Nontechnical Guide. Tulsa, Oklahoma: PennWell Corporation, 2014.
Cita MLA (9a ed.)
Leffler, William L., y Karla Womack. Natural Gas Liquids: A Nontechnical Guide. PennWell Corporation, 2014.
Precaución: Estas citas no son 100% exactas.