IE Business Cases. Chevron Cracks a New Market: Hydraulic Fracturing in Europe. [s.n.].
Chicago-čujuhus (17. p.)IE Business Cases. Chevron Cracks a New Market: Hydraulic Fracturing in Europe. [S.l.]: [s.n.].
MLA-čujuhus (9. p.)IE Business Cases. Chevron Cracks a New Market: Hydraulic Fracturing in Europe. [s.n.].
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.