Não informado. (1927). Heating and ventilating engineer and journal of air conditionin. Technitrade Journals.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. London: Technitrade Journals, 1927.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. Technitrade Journals, 1927.
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