Não informado. (1927). Heating and ventilating engineer and journal of air conditionin. Technitrade Journals.
Chicago-Zitierstil (17. Ausg.)Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. London: Technitrade Journals, 1927.
MLA-Zitierstil (8. Ausg.)Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. Technitrade Journals, 1927.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.