APA (7th ed.) Citation

PennWell MAPSearch (Firm). (2013). 2013 North America unconventional resource plays. PennWell MAPSearch.

Chicago Style (17th ed.) Citation

PennWell MAPSearch (Firm). 2013 North America Unconventional Resource Plays. [Place of publication not identified]: PennWell MAPSearch, 2013.

MLA (9th ed.) Citation

PennWell MAPSearch (Firm). 2013 North America Unconventional Resource Plays. PennWell MAPSearch, 2013.

Warning: These citations may not always be 100% accurate.