Não informado. (1933). Journal of the Institution of Heating and Ventilating Engineers. Institution of Heating and Ventilating Engineers.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Journal of the Institution of Heating and Ventilating Engineers. London: Institution of Heating and Ventilating Engineers, 1933.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Journal of the Institution of Heating and Ventilating Engineers. Institution of Heating and Ventilating Engineers, 1933.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.