APA (7e ed.) Bronvermelding

Não informado. (1929). Heating, Piping and Air Conditioning. Penton Publishing.

Chicago (17e ed.) Bronvermelding

Não informado. Heating, Piping and Air Conditioning. Cleveland, Ohio: Penton Publishing, 1929.

MLA (8e ed.) Bronvermelding

Não informado. Heating, Piping and Air Conditioning. Penton Publishing, 1929.

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