APA (7th ed.) Citation

United States. Bureau of Narcotics. (1931). [Telephone and building directory entries and door signs to indicate agency affiliation of Narcotics Bureau employees]. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Narcotics. [Telephone and Building Directory Entries and Door Signs to Indicate Agency Affiliation of Narcotics Bureau Employees]. [Washington]: [publisher not identified], 1931.

MLA (9th ed.) Citation

United States. Bureau of Narcotics. [Telephone and Building Directory Entries and Door Signs to Indicate Agency Affiliation of Narcotics Bureau Employees]. [publisher not identified], 1931.