Não informado. (1974). Heating and Air Conditioning Journal. Maclean Hunter.
Lua i Stíl Chicago (17ú heag.)Não informado. Heating and Air Conditioning Journal. London: Maclean Hunter, 1974.
Lua MLA (8ú heag.)Não informado. Heating and Air Conditioning Journal. Maclean Hunter, 1974.
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