APA

O'Connor D. A., . (1956). Catholic social doctrine. Wesrminster, Md: Newman Press.

Chicago

O'Connor Daniel A, . 1956. Catholic social doctrine. Wesrminster, Md: Newman Press.

Harvard

O'Connor D. A., . (1956). Catholic social doctrine. Wesrminster, Md: Newman Press.

MLA

O'Connor Daniel A, . Catholic social doctrine. Wesrminster, Md: Newman Press. 1956.