Schafer, J. A., Jr. (2014). The business of private medical practice: Doctors, specialization, and urban change in Philadelphia, 1900-1940. Rutgers University Press.

Schafer, James A., Jr. The Business of Private Medical Practice: Doctors, Specialization, and Urban Change in Philadelphia, 1900-1940. New Brunswick, New Jersey ; London: Rutgers University Press, 2014.

Schafer, James A., Jr. The Business of Private Medical Practice: Doctors, Specialization, and Urban Change in Philadelphia, 1900-1940. Rutgers University Press, 2014.