Pryor, E. B. (1987). Clara Barton: Professional angel. University of Pennsylvania Press.
芝加哥风格引文Pryor, Elizabeth Brown. Clara Barton: Professional Angel. Philadelphia [Pa.]: University of Pennsylvania Press, 1987.
MLA引文Pryor, Elizabeth Brown. Clara Barton: Professional Angel. University of Pennsylvania Press, 1987.
警告：这些引文格式不一定是100％准确.