United States. Department of Agriculture. Office of Personnel and Business Administration. (1930). "Small packets" in international postal service. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of Personnel and Business Administration. "Small Packets" in International Postal Service. Washington: [publisher not identified], 1930.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of Personnel and Business Administration. "Small Packets" in International Postal Service. [publisher not identified], 1930.
Warning: These citations may not always be 100% accurate.