Não informado. (2004). Hydrocarbon News. Petroleum Engineer Publishing.
Chicagoスタイル(17版)引用形式Não informado. Hydrocarbon News. Dallas, Tex: Petroleum Engineer Publishing, 2004.
MLA(8版)引用形式Não informado. Hydrocarbon News. Petroleum Engineer Publishing, 2004.
警告: この引用は必ずしも正確ではありません.