APA (7e ed.) Bronvermelding

Não informado. (1962). Concrete paving. Portland Cement Association.

Chicago (17e ed.) Bronvermelding

Não informado. Concrete Paving. Chicago, Ill: Portland Cement Association, 1962.

MLA (8e ed.) Bronvermelding

Não informado. Concrete Paving. Portland Cement Association, 1962.

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