Owen L. Anderson, The Anatomy of an Oil and Gas Drilling Contract, 25 Tulsa L.J. 359 (1990).
Foundation for Natural Resources and Energy Law (formerly Rocky Mountain Mineral Law Foundation), Law of Federal Oil and Gas Leases (1964- ). [4th Floor: KF1865 .A6 R63]. Also available in Lexis.
John S. Lowe, Analyzing Oil and Gas Farmout Agreements, 41 Sw. L.J. 759 (1987).
Natural Gas Contracts (2009-2014). Available on Westlaw. Contains hundreds of gas contract terms and clauses as well as complete sample contracts.