Não informado. (2009). Gas International. Institution of Gas Engineers and Managers.
Chicagoスタイル(17版)引用形式Não informado. Gas International. Loughborough, Inglaterra: Institution of Gas Engineers and Managers, 2009.
MLA(8版)引用形式Não informado. Gas International. Institution of Gas Engineers and Managers, 2009.
警告: この引用は必ずしも正確ではありません.