APA (7e ed.) Bronvermelding

Não informado. (1966). Summary of progress. National Cooperative Highway Research Program.

Chicago (17e ed.) Bronvermelding

Não informado. Summary of Progress. Washington: National Cooperative Highway Research Program, 1966.

MLA (8e ed.) Bronvermelding

Não informado. Summary of Progress. National Cooperative Highway Research Program, 1966.

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