TENEX - guanfacine hydrochloride tablet . Promius Pharma, LLC. U.S. National Library of Medicine, National Institutes of Health, DailyMed. Accessed April 12, 2016 from https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=886e050c-dd22-4f35-ac3b-243f091125c3
Guanfacine. Lexi-Comp ONLINE, 2016 Lexi-Comp, Inc. Accessed April 12, 2016 from http://online.lexi.com.
Guanfacine. DRUGDEX® System. 2016 Truven Health Analytics Inc. Accessed April 12, 2016 from http://www.thomsonhc.com