Excerpta Medica Foundation. Excerpta medica. Excerpta Medica Foundation.
芝加哥风格引文Excerpta Medica Foundation. Excerpta Medica. Amsterdam, New York,: Excerpta Medica Foundation.
MLA引文Excerpta Medica Foundation. Excerpta Medica. Excerpta Medica Foundation.
警告：这些引文格式不一定是100％准确.