Parsons, W. (1938). Early Catholic Publishers of Philadelphia. Washington, D.C..
Cita Chicago Style (17a ed.)Parsons, Wilfrid. Early Catholic Publishers of Philadelphia. Washington, D.C., 1938.
Cita MLA (8a ed.)Parsons, Wilfrid. Early Catholic Publishers of Philadelphia. Washington, D.C., 1938.
Precaución: Estas citas no son 100% exactas.