Graf, A. B. (1992). Tropica: Color cyclopedia of exotic plants and trees. Roehrs Company Publishers.
Chicago Style (17th ed.) CitationGraf, Alfred Byrd. Tropica: Color Cyclopedia of Exotic Plants and Trees. Roehrs Company Publishers, 1992.
MLA (8th ed.) CitationGraf, Alfred Byrd. Tropica: Color Cyclopedia of Exotic Plants and Trees. Roehrs Company Publishers, 1992.
Warning: These citations may not always be 100% accurate.