References
- Catechism of the Catholic Church. 2012. 2nd ed. Vatican City: Libreria Editrice Vaticana.
- John Paul II, Pope. 1995. Letter to women. https://w2.vatican.va/content/john-paul-ii/en/letters/1995/documents/hf_jp-ii_let_29061995_women.html.
- Paul VI, Pope. 1965. Address to women. https://w2.vatican.va/content/paul-vi/en/speeches/1965/documents/hf_p-vi_spe_19651208_epilogo-concilio-donne.html.
- Popcak, Greg K. 2017. Zombie apocalypse: Spirituality, sex, and the lay vocation. Patheos blog, June 20. http://www.patheos.com/blogs/faithonthecouch/2017/06/zombie-apocalypse-spirituality-sex-lay-vocation/.
- Sheen, Fulton J. 1999. Life is worth living. First and second series. San Francisco: Ignatius Press.
- World Health Organization IARC (WHO). 2007. Monographs on the evaluation of carcinogenic risks to humans, vol. 91, Combined estrogen-progestogen contraceptives and combined estrogen-progestogen menopausal therapy. http://monographs.iarc.fr/ENG/Monographs/vol91/mono91.pdf.