Não informado. (1950). American Journal of Proctology. International Academy of Proctology.
Chicagoスタイル(17版)引用形式Não informado. American Journal of Proctology. New York: International Academy of Proctology, 1950.
MLA(8版)引用形式Não informado. American Journal of Proctology. International Academy of Proctology, 1950.
警告: この引用は必ずしも正確ではありません.