Não informado. (1947). Institute of Petroleum Review. Institute of Petroleum.
Chicagoスタイル(17版)引用形式Não informado. Institute of Petroleum Review. London: Institute of Petroleum, 1947.
MLA(8版)引用形式Não informado. Institute of Petroleum Review. Institute of Petroleum, 1947.
警告: この引用は必ずしも正確ではありません.