National Research Council (U.S.). Committee on Undiscovered Oil and Gas Resources & ebrary, Inc. (1991). Undiscovered oil and gas resources: An evaluation of the Department of the Interior's 1989 assessment procedures. National Academy Press.
Čikaški stil citiranja (17. izdanje)National Research Council (U.S.). Committee on Undiscovered Oil and Gas Resources i Inc ebrary. Undiscovered Oil and Gas Resources: An Evaluation of the Department of the Interior's 1989 Assessment Procedures. Washington, D.C.: National Academy Press, 1991.
MLA način citiranja (9. izdanje)National Research Council (U.S.). Committee on Undiscovered Oil and Gas Resources i Inc ebrary. Undiscovered Oil and Gas Resources: An Evaluation of the Department of the Interior's 1989 Assessment Procedures. National Academy Press, 1991.