APA (7e ed.) Bronvermelding

Não informado. (2003). Engineering and contracting. Gillette Publishing Company.

Chicago (17e ed.) Bronvermelding

Não informado. Engineering and Contracting. Hammond, Ind: Gillette Publishing Company, 2003.

MLA (8e ed.) Bronvermelding

Não informado. Engineering and Contracting. Gillette Publishing Company, 2003.

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