APA (7e ed.) Bronvermelding

Pius XII, P. (1956). Psychological method of natural painless childbirth: Address. National Catholic Welfare Conference.

Chicago (17e ed.) Bronvermelding

Pius XII, Pope. Psychological Method of Natural Painless Childbirth: Address. Washington: National Catholic Welfare Conference, 1956.

MLA (8e ed.) Bronvermelding

Pius XII, Pope. Psychological Method of Natural Painless Childbirth: Address. National Catholic Welfare Conference, 1956.