United States. Federal Horticultural Board. (1930). Amendment of regulations governing entry of potatoes into U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Federal Horticultural Board. Amendment of Regulations Governing Entry of Potatoes into U.S. [Washington]: GPO, 1930.
MLA (9th ed.) CitationUnited States. Federal Horticultural Board. Amendment of Regulations Governing Entry of Potatoes into U.S. GPO, 1930.
Warning: These citations may not always be 100% accurate.