APA (7th ed.) Zitazioa
ebrary, Inc. (1994). Drilling and excavation technologies for the future. National Academy Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc. Drilling and Excavation Technologies for the Future. Washington, D.C.: National Academy Press, 1994.
MLA (9th ed.) Zitazioa
ebrary, Inc. Drilling and Excavation Technologies for the Future. National Academy Press, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.