United States. Division of Botany, Botanical Exchange Club, & Vasey, G. A. Rules for Botanical Exchange Club. [publisher not identified.
Chicago Style (17th ed.) CitationUnited States. Division of Botany, Botanical Exchange Club, and George Alan Vasey. Rules for Botanical Exchange Club. Washington, D.C.: [publisher not identified.
MLA (9th ed.) CitationUnited States. Division of Botany, et al. Rules for Botanical Exchange Club. [publisher not identified.
Warning: These citations may not always be 100% accurate.