Não informado. (2019). The Heating and Ventilating Magazine. Heating and Ventilating Magazine.
Chicago-referens (17:e uppl.)Não informado. The Heating and Ventilating Magazine. New York: Heating and Ventilating Magazine, 2019.
MLA-referens (8:e uppl.)Não informado. The Heating and Ventilating Magazine. Heating and Ventilating Magazine, 2019.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.