Cita APA (7th ed.)
ebrary, Inc. (2004). The hydrogen economy: Opportunities, costs, barriers, and R&D needs. National Academies Press.
Cita Chicago (17th ed.)
ebrary, Inc. The Hydrogen Economy: Opportunities, Costs, Barriers, and R&D Needs. Washington, D.C.: National Academies Press, 2004.
Cita MLA (9th ed.)
ebrary, Inc. The Hydrogen Economy: Opportunities, Costs, Barriers, and R&D Needs. National Academies Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.