APA (7th ed.) Citation

Perry, F., & Greenwood, L. (1972). Flowers of the world. Crown.

Chicago Style (17th ed.) Citation

Perry, Frances, and Leslie Greenwood. Flowers of the World. [New York]: Crown, 1972.

MLA (9th ed.) Citation

Perry, Frances, and Leslie Greenwood. Flowers of the World. Crown, 1972.