Não informado. (1927). California highways and public works. State of California, Department of Public Works.
Citação do estilo Chicago (17ª ed.)Não informado. California Highways and Public Works. Sacramento, Calif: State of California, Department of Public Works, 1927.
Citação MLA (8ª ed.)Não informado. California Highways and Public Works. State of California, Department of Public Works, 1927.
Atenció: Aquestes cites poden no estar 100% correctes.