Jeanette Sitton, author (4 Disember 2007). "Joseph's Autobiography". Friends of Joseph Carey Merrick Foundation. Diarkibkan daripada yang asal pada 3 November 2005. Dicapai pada 19 Jun 2008.
Tibbles J, Cohen M (1986). "The Proteus syndrome: the Elephant Man diagnosed". Br Med J (Clin Res Ed). 293 (6548): 683–685. doi:10.1136/bmj.293.6548.683. PMID3092979.
Tibbles J, Cohen M (1986). "The Proteus syndrome: the Elephant Man diagnosed". Br Med J (Clin Res Ed). 293 (6548): 683–685. doi:10.1136/bmj.293.6548.683. PMID3092979.
Jeanette Sitton, author (4 Disember 2007). "Joseph's Autobiography". Friends of Joseph Carey Merrick Foundation. Diarkibkan daripada yang asal pada 3 November 2005. Dicapai pada 19 Jun 2008.