Markell KW, Billingham RP (February 2010). "Pruritus ani: etiology and management". The Surgical Clinics of North America. 90 (1): 125–35, Table of Contents. doi:10.1016/j.suc.2009.09.007. PMID20109637.
Markell KW, Billingham RP (February 2010). "Pruritus ani: etiology and management". The Surgical Clinics of North America. 90 (1): 125–35, Table of Contents. doi:10.1016/j.suc.2009.09.007. PMID20109637.