Não informado. (1958). Modern Refrigeration and Air Control News. Refrigeration Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Modern Refrigeration and Air Control News. Croydon, Inglaterra: Refrigeration Press, 1958.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Modern Refrigeration and Air Control News. Refrigeration Press, 1958.
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