Método Billings (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Método Billings" in Spanish language version.

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archive.org

Kippley, John; Sheila Kippley (1996). The Art of Natural Family Planning (4th Edition edición). Cincinnati, OH: The Couple to Couple League. pp. 88. ISBN 0-926412-13-2.

contraceptivetechnology.com

Hatcher, RA; Trussel J, Stewart F, et al (2000). Contraceptive Technology (18th Edition edición). Nueva York: Ardent Media. ISBN 0-9664902-6-6. Archivado desde el original el 31 de mayo de 2008. Consultado el 1 de febrero de 2008.

contraceptivetechnology.org

Kowal, Debbie; Hatcher, Robert Anthony; Nelson, Anita L.; Trussell, James; Cwiak, Carrie A.; Cason, Patty; Policar, Michael S.; Edelman, Alison et al. (2018). Contraceptive Technology 21st Edition. Managing Contraception, LLC. p. 844. ISBN 978-1-7320556-0-5.

doi.org

doi.org

Marshell, Marie; Corkill, Marian; Whitty, Mark; Thomas, Adrian; Turner, Joseph (2021). «Stratification of fertility potential according to cervical mucus symptoms: achieving pregnancy in fertile and infertile couples». Human Fertility 24 (5): 353-359. PMID 31661330. doi:10.1080/14647273.2019.1671613. Consultado el 19 de octubre de 2022.

dx.doi.org

Marshell, Marie; Corkill, Marian; Whitty, Mark; Thomas, Adrian; Turner, Joseph (2021). «Stratification of fertility potential according to cervical mucus symptoms: achieving pregnancy in fertile and infertile couples». Human Fertility 24 (5): 353-359. PMID 31661330. doi:10.1080/14647273.2019.1671613. Consultado el 19 de octubre de 2022.

merck.com

estadísticas de MERCK

nih.gov

ncbi.nlm.nih.gov

Marshell, Marie; Corkill, Marian; Whitty, Mark; Thomas, Adrian; Turner, Joseph (2021). «Stratification of fertility potential according to cervical mucus symptoms: achieving pregnancy in fertile and infertile couples». Human Fertility 24 (5): 353-359. PMID 31661330. doi:10.1080/14647273.2019.1671613. Consultado el 19 de octubre de 2022.

nytimes.com

John Billings, 89, Creator of Contraception Method, Dies - The New York Times

vatican.va

«Catecismo de la Iglesia Católica, Tercera parte, Segunda sección, capítulo segundo, artículo 6, 2331-2400». www.vatican.va. Consultado el 25 de junio de 2017.

web.archive.org

THE QUEST - leading to the discovery of the Billings Ovulation Method, Billings, J., Bulletin of Ovulation Method Research and Reference Centre of Australia, Vol 29 No.1 March 2002, pp18-28.
The Discovery of Different Types of Cervical Mucus, Erik Odeblad, Bulletin of the Ovulation Method Research and Reference Centre of Australia, Volumen 21, No. 3. September 1994, pp. 3-35.
Ovarian Activity and Fertility and the Billings Ovulation Method: Dr. James B. Brown, 2000.
China Successfully Launching Billings Method: Dr. Shao-Zhen Qian
Trials of the Billings Ovulation Method The Billings Method, Dr. Evelyn Billings & Ann Westmore, 2000, p. 215.
Evaluation of the Effectiveness of a Natural Fertility Regulation Programme in China: Shao-Zhen Qian, et al. Reproduction and Contraception (English edition), in press 2000.
Hatcher, RA; Trussel J, Stewart F, et al (2000). Contraceptive Technology (18th Edition edición). Nueva York: Ardent Media. ISBN 0-9664902-6-6. Archivado desde el original el 31 de mayo de 2008. Consultado el 1 de febrero de 2008.

who.int

http://www.who.int/reproductive-health/publications/spr/spr_effectiveness_method.html Estadísticas de la Organización Mundial de la Salud (diferencia entre distintos métodos naturales)