APA (7e ed.) Bronvermelding

Não informado. Civil engineering. U.S. Department of Commerce, National Technical Information Service.

Chicago (17e ed.) Bronvermelding

Não informado. Civil Engineering. Springfield, Va: U.S. Department of Commerce, National Technical Information Service.

MLA (8e ed.) Bronvermelding

Não informado. Civil Engineering. U.S. Department of Commerce, National Technical Information Service.

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