McAvoy, T. T. (1961). The Catholic minority in early Pittsburgh: The first bishop, Michael O'Connor. s.n..
Dyfyniad Arddull ChicagoMcAvoy, Thomas Timothy. The Catholic Minority in Early Pittsburgh: The First Bishop, Michael O'Connor. [Philadelphia?: s.n., 1961.
Dyfyniad MLAMcAvoy, Thomas Timothy. The Catholic Minority in Early Pittsburgh: The First Bishop, Michael O'Connor. s.n., 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.