Graf, A. B. (1992). Hortica: Color cyclopedia of garden flora in all climates worldwide and exotic plants indoors (First edition.). New Jersey: Roehrs company.
Chicago Style CitationGraf, Alfred Byrd. Hortica: Color Cyclopedia of Garden Flora in All Climates Worldwide and Exotic Plants Indoors. First edition. New Jersey: Roehrs company, 1992.
MLA CitationGraf, Alfred Byrd. Hortica: Color Cyclopedia of Garden Flora in All Climates Worldwide and Exotic Plants Indoors. First edition. New Jersey: Roehrs company, 1992.
Warning: These citations may not always be 100% accurate.