Não informado. (2019). The Heating and Ventilating Magazine. Heating and Ventilating Magazine.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The Heating and Ventilating Magazine. New York: Heating and Ventilating Magazine, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The Heating and Ventilating Magazine. Heating and Ventilating Magazine, 2019.
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