APA (7e ed.) Bronvermelding

Não informado. (1954). Building maintenance and modernization. Trade Press.

Chicago (17e ed.) Bronvermelding

Não informado. Building Maintenance and Modernization. Milwaukee, Wis: Trade Press, 1954.

MLA (8e ed.) Bronvermelding

Não informado. Building Maintenance and Modernization. Trade Press, 1954.

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