IE Business Cases. Chevron Cracks a New Market: Hydraulic Fracturing in Europe. [s.n.].
Chicagoスタイル(17版)引用形式IE Business Cases. Chevron Cracks a New Market: Hydraulic Fracturing in Europe. [S.l.]: [s.n.].
MLA(9版)引用形式IE Business Cases. Chevron Cracks a New Market: Hydraulic Fracturing in Europe. [s.n.].
警告: この引用は必ずしも正確ではありません.