average size of the humanpenis is around 12.5 cm or 5 inches, a micropenis spans less than 7 cm or just over two inches." ^ “Penis Size FAQ & Bibliography”
c McCoombe SG, Short RV (2006). “Potential HIV-1 target cells in the humanpenis”. AIDS 20 (11): 1491–5. doi:10.1097/01.aids.0000237364.11123.98. PMID 16847403
Barnard, Linda (29 April 2012). “Hot Docs 2012: Icelandic penis museum's search for a human specimen”. The Toronto Star. オリジナルの6 August 2012時点におけるアーカイブ。