Gaya APA

O'Grady, J, F. (1997). The Roman Catholic Church: Its origin and nature. . New York/Mahwah: New York/Mahwah Paulist Press.

Gaya MLA

O'Grady, John, F.. "The Roman Catholic Church: Its origin and nature. ". New York/Mahwah: New York/Mahwah Paulist Press, 1997. Buku.