ScienceDirect (Online service), Heywood, V. H., & Jackson, P. W. (1991). Tropical botanic gardens: Their role in conservation and development. Academic Press.
Chicago Style (17th ed.) CitationScienceDirect (Online service), V. H. Heywood, and Peter Wyse Jackson. Tropical Botanic Gardens: Their Role in Conservation and Development. London ; New York: Academic Press, 1991.
MLA (9th ed.) CitationScienceDirect (Online service), et al. Tropical Botanic Gardens: Their Role in Conservation and Development. Academic Press, 1991.
Warning: These citations may not always be 100% accurate.