APA (7th ed.) Zitazioa
ebrary, Inc. (2004). Stepping-stones to the future of space exploration: A workshop report. National Academies Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc. Stepping-stones to the Future of Space Exploration: A Workshop Report. Washington, D.C.: National Academies Press, 2004.
MLA (9th ed.) Zitazioa
ebrary, Inc. Stepping-stones to the Future of Space Exploration: A Workshop Report. National Academies Press, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.