Não informado. University of Pennsylvania medical bulletin. University of Pennsylvania, School of Medicine.
Chicagoスタイル(17版)引用形式Não informado. University of Pennsylvania Medical Bulletin. Philadelphia, Pa: University of Pennsylvania, School of Medicine.
MLA(8版)引用形式Não informado. University of Pennsylvania Medical Bulletin. University of Pennsylvania, School of Medicine.
警告: この引用は必ずしも正確ではありません.