APA (7th ed.) Citation

United States. Bureau of Foreign and Domestic Commerce. (1930). Radio broadcasting stations in southern South America. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Foreign and Domestic Commerce. Radio Broadcasting Stations in Southern South America. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

United States. Bureau of Foreign and Domestic Commerce. Radio Broadcasting Stations in Southern South America. [publisher not identified], 1930.