Não informado. (2017). Hart's Petroleum Engineer International: The magazine of drilling and production technology, onshore, offshore, worldwide. Hart Publications.
Čikaški stil citiranja (17. izdanje)Não informado. Hart's Petroleum Engineer International: The Magazine of Drilling and Production Technology, Onshore, Offshore, Worldwide. Houston, Tex: Hart Publications, 2017.
MLA način citiranja (8. izdanje)Não informado. Hart's Petroleum Engineer International: The Magazine of Drilling and Production Technology, Onshore, Offshore, Worldwide. Hart Publications, 2017.
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