Thumann, A. (1987). Plant engineers and managers guide to energy conservation (3rd ed.). Fairmont Press.
Chicago-čujuhus (17. p.)Thumann, Albert. Plant Engineers and Managers Guide to Energy Conservation. 3rd ed. Lilburn, GA: Fairmont Press, 1987.
MLA-čujuhus (9. p.)Thumann, Albert. Plant Engineers and Managers Guide to Energy Conservation. 3rd ed. Fairmont Press, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.