United States. Department of Agriculture. (1938). Revised rules and regulations governing the movement of plants and plant products into and out of the District of Columbia. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Revised Rules and Regulations Governing the Movement of Plants and Plant Products into and Out of the District of Columbia. [Washington]: [s.n.], 1938.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Revised Rules and Regulations Governing the Movement of Plants and Plant Products into and Out of the District of Columbia. [s.n.], 1938.
Warning: These citations may not always be 100% accurate.