1. “Retardering of Pachystachys lutea med Ar.-85, Ethrel og CCC.”;Adriansen;Tisskr. Planteavl,1974
2. Anonymous. (1977a) “Strong future seen for primrose sales.”. Grower. 87: (14) 794–795
3. Anonymous. (1977b). Flower and Foliage Plant. Crop Reporting Board, SRS, USDA, Washington, D.C.
4. Anonymous. (1989). New Guinea Impatiens—Cultural Information. Paul Ecke Ranch: Encinitas, CA.
5. Bailey Hortorium Staff. (1976). Hortus Third. New York: Macmillan.