APA

Ellis L., Brown A., Schoell M., Brown A. & Schoell M.Mud gas isotope logging (MGIL) assists in oil and gas drilling operations. : .

Chicago

Ellis Leroy, Brown Alton, Schoell Martin, Brown Alton and Schoell Martin.Mud gas isotope logging (MGIL) assists in oil and gas drilling operations. : .

Harvard

Ellis L., Brown A., Schoell M., Brown A. and Schoell M.Mud gas isotope logging (MGIL) assists in oil and gas drilling operations. : .

MLA

Ellis Leroy, Brown Alton, Schoell Martin, Brown Alton and Schoell Martin.: . .