Naval Education and Training Program Management Support Activity. (1971). Basic machines and how they work. Dover Publications.
Chicago-referens (17:e uppl.)Naval Education and Training Program Management Support Activity. Basic Machines and How They Work. New York: Dover Publications, 1971.
MLA-referens (8:e uppl.)Naval Education and Training Program Management Support Activity. Basic Machines and How They Work. Dover Publications, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.