Outsmarting Poison Ivy and Other Poisonous Plants. U.S. Food and Drug Administration: Consumer Updates. 9 June 2021 [Originally posted c. June 2009, since updated but advice unchanged]. (原始内容存档于5 June 2009).
World Health Organization. World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. 2019. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
Outsmarting Poison Ivy and Other Poisonous Plants. U.S. Food and Drug Administration: Consumer Updates. 9 June 2021 [Originally posted c. June 2009, since updated but advice unchanged]. (原始内容存档于5 June 2009).