References
- Pope Paul VI, Humanae Vitae, An Encyclical Letter. July 25, 1968. Paragraph 14.
- Ibid, Paragraph 15.
- Ethical and ReligiOUS Directives for Catholic Health Care Services. National Conference of Catholic Bishops. November 1995 (see Origins, Vol. 24, No. 27, December 15, 1995).
- Code of Ethics, American Academy of Natural Family Planning, St. Louis, Missouri, 1983.
- National Standards for Natural Family Planning. National Conference of Catholic Bishops, United States Catholic Confereence 1990, p. II.