Não informado. (2009). Proceedings of the Annual Meeting. American Petroleum Institute.
Chicagoスタイル(17版)引用形式Não informado. Proceedings of the Annual Meeting. New York: American Petroleum Institute, 2009.
MLA(8版)引用形式Não informado. Proceedings of the Annual Meeting. American Petroleum Institute, 2009.
警告: この引用は必ずしも正確ではありません.