Thumann, A. (1987). Plant engineers and managers guide to energy conservation (3rd ed.). Fairmont Press.
Chicago-referens (17:e uppl.)Thumann, Albert. Plant Engineers and Managers Guide to Energy Conservation. 3rd ed. Lilburn, GA: Fairmont Press, 1987.
MLA-referens (9:e uppl.)Thumann, Albert. Plant Engineers and Managers Guide to Energy Conservation. 3rd ed. Fairmont Press, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.