National Research Council (U.S.). Committee on Advanced Drilling Technologies. (1994). Drilling and excavation technologies for the future. National Academy Press, Washington, D.C. : National Academy Press.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)National Research Council (U.S.). Committee on Advanced Drilling Technologies. Drilling and Excavation Technologies for the Future. Washington, D.C.: National Academy Press, Washington, D.C. : National Academy Press, 1994.
MLA -ийн эшлэл (9 дэх хэвлэлт)National Research Council (U.S.). Committee on Advanced Drilling Technologies. Drilling and Excavation Technologies for the Future. National Academy Press, Washington, D.C. : National Academy Press, 1994.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.