Pryor, E. B. (1987). Clara Barton, Professional Angel. University of Pennsylvania Press.
Cita Chicago Style (17a ed.)Pryor, Elizabeth Brown. Clara Barton, Professional Angel. Philadelphia: University of Pennsylvania Press, 1987.
Cita MLA (8a ed.)Pryor, Elizabeth Brown. Clara Barton, Professional Angel. University of Pennsylvania Press, 1987.
Precaución: Estas citas no son 100% exactas.