APA (7e ed.) Bronvermelding

Não informado. (1937). Engineering and Contract Record. Southam Business Publications.

Chicago (17e ed.) Bronvermelding

Não informado. Engineering and Contract Record. Toronto, Canada: Southam Business Publications, 1937.

MLA (8e ed.) Bronvermelding

Não informado. Engineering and Contract Record. Southam Business Publications, 1937.

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