Douglas, S., & Durham, S. (1988). Anorectal malformations in children update 1988.
Cita Chicago (17th ed.)Douglas, Stephens, i Smith Durham. Anorectal Malformations in Children Update 1988. 1988.
Cita MLA (9th ed.)Douglas, Stephens, i Smith Durham. Anorectal Malformations in Children Update 1988. 1988.
Atenció: Aquestes cites poden no estar 100% correctes.