Não informado. (1973). Hydrogen Energy. University of New Mexico, Technology Application Center.
Chicago-viite (17. p.)Não informado. Hydrogen Energy. Albuquerque, México: University of New Mexico, Technology Application Center, 1973.
MLA-viite (8. p.)Não informado. Hydrogen Energy. University of New Mexico, Technology Application Center, 1973.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.