APA (7th ed.) Citation

Graf, A. B. (1992). Hortica: A colour cyclopedia of garden flora (Ist ed.). Roehrs Company.

Chicago Style (17th ed.) Citation

Graf, Alfred Byrd. Hortica: A Colour Cyclopedia of Garden Flora. Ist ed. New Jersey: Roehrs Company, 1992.

MLA (9th ed.) Citation

Graf, Alfred Byrd. Hortica: A Colour Cyclopedia of Garden Flora. Ist ed. Roehrs Company, 1992.

Warning: These citations may not always be 100% accurate.