Graf, A. B. (1992). Tropica: Color cyclopedia of exotic plants and trees : for warm-region horticulture-in cool climate the summer garden or sheltered indoors (Fourth edition.). New Jersey: Roehrs Company.
Chicago Style CitationGraf, Alfred Byrd. Tropica: Color Cyclopedia of Exotic Plants and Trees : For Warm-region Horticulture-in Cool Climate the Summer Garden or Sheltered Indoors. Fourth edition. New Jersey: Roehrs Company, 1992.
MLA CitationGraf, Alfred Byrd. Tropica: Color Cyclopedia of Exotic Plants and Trees : For Warm-region Horticulture-in Cool Climate the Summer Garden or Sheltered Indoors. Fourth edition. New Jersey: Roehrs Company, 1992.
Warning: These citations may not always be 100% accurate.