United States. Department of State. (1928). Passport regulations, Executive order, Jan. 31, 1928; Rules governing granting and issuing of passports in U.S., regulations concerning passports and applications therefor issued by Secretary of State in pursuance of Executive order of Jan. 31, 1928. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of State. Passport Regulations, Executive Order, Jan. 31, 1928; Rules Governing Granting and Issuing of Passports in U.S., Regulations Concerning Passports and Applications Therefor Issued by Secretary of State in Pursuance of Executive Order of Jan. 31, 1928. Washington: U.S. GPO, 1928.
MLA (9th ed.) CitationUnited States. Department of State. Passport Regulations, Executive Order, Jan. 31, 1928; Rules Governing Granting and Issuing of Passports in U.S., Regulations Concerning Passports and Applications Therefor Issued by Secretary of State in Pursuance of Executive Order of Jan. 31, 1928. U.S. GPO, 1928.