APA (7e ed.) Bronvermelding

Não informado. (1927). Heating and ventilating engineer and journal of air conditionin. Technitrade Journals.

Chicago (17e ed.) Bronvermelding

Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. London: Technitrade Journals, 1927.

MLA (8e ed.) Bronvermelding

Não informado. Heating and Ventilating Engineer and Journal of Air Conditionin. Technitrade Journals, 1927.

Let op: Deze citaties zijn niet altijd 100% accuraat.