APA (7e ed.) Bronvermelding

Pius XII, P. (1940). The family front: 50th anniversary of Rerum novarum, June 1, 1941. Catholic Worker Press.

Chicago (17e ed.) Bronvermelding

Pius XII, Pope. The Family Front: 50th Anniversary of Rerum Novarum, June 1, 1941. Chicago: Catholic Worker Press, 1940.

MLA (8e ed.) Bronvermelding

Pius XII, Pope. The Family Front: 50th Anniversary of Rerum Novarum, June 1, 1941. Catholic Worker Press, 1940.

Let op: Deze citaties zijn niet altijd 100% accuraat.