United States. Division of Botany & Vasey, G. A. Instructions to botanical collectors. [publisher not identified.
Chicago Style (17th ed.) CitationUnited States. Division of Botany and George Alan Vasey. Instructions to Botanical Collectors. Washington, D.C.: [publisher not identified.
MLA (9th ed.) CitationUnited States. Division of Botany and George Alan Vasey. Instructions to Botanical Collectors. [publisher not identified.
Warning: These citations may not always be 100% accurate.