APA (7th ed.) Citation

American Petroleum Institute. Exploration and Production Department. (1993). Model form of voluntary unit agreement (4th ed.). American Petroleum Institute.

Chicago Style (17th ed.) Citation

American Petroleum Institute. Exploration and Production Department. Model Form of Voluntary Unit Agreement. 4th ed. Washington, D.C.: American Petroleum Institute, 1993.

MLA (9th ed.) Citation

American Petroleum Institute. Exploration and Production Department. Model Form of Voluntary Unit Agreement. 4th ed. American Petroleum Institute, 1993.