Não informado. (2017). The Petroleum Engineer. Petroleum Engineer Publishing.
Chicagoスタイル(17版)引用形式Não informado. The Petroleum Engineer. Dallas, Tex: Petroleum Engineer Publishing, 2017.
MLA(8版)引用形式Não informado. The Petroleum Engineer. Petroleum Engineer Publishing, 2017.
警告: この引用は必ずしも正確ではありません.