Portier, W. L. (2013). Divided friends: Portraits of the Roman Catholic modernist crisis in the United States. Catholic University of America Press.

Portier, William L. Divided Friends: Portraits of the Roman Catholic Modernist Crisis in the United States. Washington, District of Columbia: Catholic University of America Press, 2013.

Portier, William L. Divided Friends: Portraits of the Roman Catholic Modernist Crisis in the United States. Catholic University of America Press, 2013.