(Inggris) Campbell, Flann (Nov 1960). "Birth Control and the Christian Churches". Population Studies. Population Investigation Committee. 14 (2): 131–147. doi:10.2307/2172010. JSTOR2172010.
(Inggris) Srikanthan, A; Reid, RL (February 2008). "Religious and cultural influences on contraception"(PDF). Journal of obstetrics and gynaecology Canada – Journal d'obstetrique et gynecologie du Canada (JOGC). 30 (2): 129–37. PMID18254994. Diarsipkan dari versi asli(PDF) tanggal 2013-10-04. Diakses tanggal 2017-02-07.
jstor.org
(Inggris) Campbell, Flann (Nov 1960). "Birth Control and the Christian Churches". Population Studies. Population Investigation Committee. 14 (2): 131–147. doi:10.2307/2172010. JSTOR2172010.
(Inggris) Srikanthan, A; Reid, RL (February 2008). "Religious and cultural influences on contraception"(PDF). Journal of obstetrics and gynaecology Canada – Journal d'obstetrique et gynecologie du Canada (JOGC). 30 (2): 129–37. PMID18254994. Diarsipkan dari versi asli(PDF) tanggal 2013-10-04. Diakses tanggal 2017-02-07.
(Inggris) Srikanthan, A; Reid, RL (February 2008). "Religious and cultural influences on contraception"(PDF). Journal of obstetrics and gynaecology Canada – Journal d'obstetrique et gynecologie du Canada (JOGC). 30 (2): 129–37. PMID18254994. Diarsipkan dari versi asli(PDF) tanggal 2013-10-04. Diakses tanggal 2017-02-07.