Douglas, S., & Durham, S. (1988). Anorectal malformations in children update 1988.
芝加哥风格引文Douglas, Stephens, 与 Smith Durham. Anorectal Malformations in Children Update 1988. 1988.
MLA引文Douglas, Stephens, 与 Smith Durham. Anorectal Malformations in Children Update 1988. 1988.
警告：这些引文格式不一定是100％准确.