Mather, J. C. (1975). Petroleum of Geology of Naval Petroleum Reserve No. 1, Elk Hills, Kern County, California (Geological Survey Professional Paper 912). United States Government Printing Office.
Chicago-viite (17. p.)Mather, John Charles. Petroleum of Geology of Naval Petroleum Reserve No. 1, Elk Hills, Kern County, California (Geological Survey Professional Paper 912). Washington: United States Government Printing Office, 1975.
MLA-viite (9. p.)Mather, John Charles. Petroleum of Geology of Naval Petroleum Reserve No. 1, Elk Hills, Kern County, California (Geological Survey Professional Paper 912). United States Government Printing Office, 1975.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.