Não informado. (2019). The Heating and Ventilating Magazine. Heating and Ventilating Magazine.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. The Heating and Ventilating Magazine. New York: Heating and Ventilating Magazine, 2019.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. The Heating and Ventilating Magazine. Heating and Ventilating Magazine, 2019.
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