Cita APA (7th ed.)
ebrary, Inc. (2004). Stepping-stones to the future of space exploration: A workshop report. National Academies Press.
Cita Chicago (17th ed.)
ebrary, Inc. Stepping-stones to the Future of Space Exploration: A Workshop Report. Washington, D.C.: National Academies Press, 2004.
Cita MLA (9th ed.)
ebrary, Inc. Stepping-stones to the Future of Space Exploration: A Workshop Report. National Academies Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.