United States. Bureau of Agricultural Economics. (1931). Marketing Imperial Valley lettuce, summary of 1931 season. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Agricultural Economics. Marketing Imperial Valley Lettuce, Summary of 1931 Season. [Washington]: [publisher not identified], 1931.
MLA (9th ed.) CitationUnited States. Bureau of Agricultural Economics. Marketing Imperial Valley Lettuce, Summary of 1931 Season. [publisher not identified], 1931.
Warning: These citations may not always be 100% accurate.