1. Albert, B., 1999. Rhus dermatitis treatment composition and method. Patent 5888515 Issued March 30, 1999. Estimated expiration date: December 11, 2017. 〈http://www.patentstorm.us/patents/5888515.html〉.
2. Aocd.org/skin, 2012. American Osteopathic College of Dermatology. 〈http://www.aocd.org/skin/dermatologic_diseases/poison_ivy_dermati.html〉.
3. Poison oak: more than just scratching the surface;Armstrong;HerbalGram,1995
4. The Green Pharmacy;Duke,1999
5. Taylor's Guide to Annuals: How to Select and Grow More Than 400 Annuals, Biennials, and Tender Perennials;Ellis,2000