Cita APA

Graf, A. B. (1992). Hortica: Color cyclopedia of garden flora in all climates worldwide and exotic plants indoors (First edition.). New Jersey: Roehrs company.

Citación estilo Chicago

Graf, Alfred Byrd. Hortica: Color Cyclopedia of Garden Flora in All Climates Worldwide and Exotic Plants Indoors. First edition. New Jersey: Roehrs company, 1992.

Cita MLA

Graf, Alfred Byrd. Hortica: Color Cyclopedia of Garden Flora in All Climates Worldwide and Exotic Plants Indoors. First edition. New Jersey: Roehrs company, 1992.