49 (1 Suppl): S1–37. PMID 12833004. doi:10.1067/mjd.2003.618. Kang S, Voorhees JJ. Topical retinoids. In: Fitzpatrick's Dermatology in General Medicine
doi:10.1111/j.1471-6402.2004.00149.x. Kaufman, A; Divasto, P; Jackson, R; Voorhees, D; Christy, J. Male rape victims: Noninstitutionalized assault. The American
May 2008 [2012-04-04]. [永久失效連結] A New Face of TOD: Bus Rapid Transit. Voorhees Transportation Institute. January 2008 [2012-04-04]. (原始内容存档于2012-05-02)