Não informado. (1927). Heating and ventilating engineer and journal of air conditionin. Technitrade Journals.
Lua i Stíl Chicago (17ú heag.)Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. London: Technitrade Journals, 1927.
Lua MLA (8ú heag.)Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. Technitrade Journals, 1927.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.