APA
Green D. W., Willhite G. P. & Willhite G. P. (1998). Enhanced oil recovery. Richardson, Texas: Society of Petroleum Engineers, SPE.
Chicago
Green Don W, Willhite G Paul and Willhite G Paul. 1998. Enhanced oil recovery. Richardson, Texas: Society of Petroleum Engineers, SPE.
Harvard
Green D. W., Willhite G. P. and Willhite G. P. (1998). Enhanced oil recovery. Richardson, Texas: Society of Petroleum Engineers, SPE.
MLA
Green Don W, Willhite G Paul and Willhite G Paul. Enhanced oil recovery. Richardson, Texas: Society of Petroleum Engineers, SPE. 1998.