Não informado. (2008). Roads and road construction year book & directory. Carriers Publishing Company.
Citação do estilo Chicago (17ª ed.)Não informado. Roads and Road Construction Year Book & Directory. London: Carriers Publishing Company, 2008.
Citação MLA (8ª ed.)Não informado. Roads and Road Construction Year Book & Directory. Carriers Publishing Company, 2008.
警告:这些引文格式不一定是100%准确.