United States. Bureau of Plant Industry. (1933). Plant material introduced by Division of Foreign Plant Introduction, Apr. 1-June 30, 1931; nos. 92337-93748. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry. Plant Material Introduced by Division of Foreign Plant Introduction, Apr. 1-June 30, 1931; Nos. 92337-93748. [Washington]: [s.n.], 1933.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry. Plant Material Introduced by Division of Foreign Plant Introduction, Apr. 1-June 30, 1931; Nos. 92337-93748. [s.n.], 1933.
Warning: These citations may not always be 100% accurate.