1. M. King Hubbert. 1956. Am. Petroleum Inst.
2. M. King Hubbert. 1962. Nat. Acad. Sci.-Nat. Res. Counc. Puhl. WOO-D.
3. U.S., Congress, Senate, Committee on Interior and Insular Affairs, Ser. no. 93–40(92–75). 93d Cong., 2d session, 1974.
4. M. King Hubbert. 1978. McGraw Hill enclycope-dia of energy. New York: McGraw Hill Book Co.
5. T.A. Siddiqi. In Critical energy issues in Asia and the Pacific. F. Fesharaki, H. Brown, C. Sid-diyao, T. Siddiqi, K.R. Smith, and K. Woodard, eds. 1982. Boulder, Colo: Westview Press.