Douglas, S., & Durham, S. (1988). Anorectal malformations in children update 1988. Alan R. Liss.
Lua i Stíl Chicago (17ú heag.)Douglas, Stephens, agus Smith Durham. Anorectal Malformations in Children Update 1988. New York: Alan R. Liss, 1988.
Lua MLA (9ú heag.)Douglas, Stephens, agus Smith Durham. Anorectal Malformations in Children Update 1988. Alan R. Liss, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.