APA-ийн эшлэл(7 дахь хэвлэлт)
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.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
National Research Council (U.S.). Committee on Undiscovered Oil and Gas Resources ба 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 -ийн эшлэл (9 дэх хэвлэлт)
National Research Council (U.S.). Committee on Undiscovered Oil and Gas Resources ба Inc ebrary. Undiscovered Oil and Gas Resources: An Evaluation of the Department of the Interior's 1989 Assessment Procedures. National Academy Press, 1991.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.