Não informado. (1929). Heating and Ventilating. National Trade Journals.
Chicagoスタイル(17版)引用形式Não informado. Heating and Ventilating. New York: National Trade Journals, 1929.
MLA(8版)引用形式Não informado. Heating and Ventilating. National Trade Journals, 1929.
警告: この引用は必ずしも正確ではありません.