APA(7版)引用形式

Não informado. (2017). Petroleum Engineer. Petroleum Engineer Publications.

Chicagoスタイル(17版)引用形式

Não informado. Petroleum Engineer. Dallas, Tex: Petroleum Engineer Publications, 2017.

MLA(8版)引用形式

Não informado. Petroleum Engineer. Petroleum Engineer Publications, 2017.

警告: この引用は必ずしも正確ではありません.