Não informado. Summary of operations, California oil fields. Department of Natural Resources, Division of Oil and Gas.
Chicago-Zitierstil (17. Ausg.)Não informado. Summary of Operations, California Oil Fields. San Francisco, Calif: Department of Natural Resources, Division of Oil and Gas.
MLA-Zitierstil (8. Ausg.)Não informado. Summary of Operations, California Oil Fields. Department of Natural Resources, Division of Oil and Gas.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.