Não informado. (1966). Summary of progress. National Cooperative Highway Research Program.
Style de citation Chicago (17e éd.)Não informado. Summary of Progress. Washington: National Cooperative Highway Research Program, 1966.
Style de citation MLA (8e éd.)Não informado. Summary of Progress. National Cooperative Highway Research Program, 1966.
Attention : ces citations peuvent ne pas être correctes à 100%.