APA (7th ed.) Citation

District of Columbia. Director of Traffic. (1930). Annual report of Director of Traffic of D.C. GPO.

Chicago Style (17th ed.) Citation

District of Columbia. Director of Traffic. Annual Report of Director of Traffic of D.C. [Washington]: GPO, 1930.

MLA (9th ed.) Citation

District of Columbia. Director of Traffic. Annual Report of Director of Traffic of D.C. GPO, 1930.