LaurenL.ThaxtonLaurenL., AntonellaA.LavelanetAntonellaA., Systematic review of efficacy with extending contraceptive implant duration, „International Journal of Gynaecology and Obstetrics: The Official Organ of the International Federation of Gynaecology and Obstetrics”, 144 (1), 2019, s. 2–8, DOI: 10.1002/ijgo.12696, ISSN1879-3479, PMID: 30343503, PMCID: PMC7379677 [dostęp 2021-01-06](ang.).
LaurenL.ThaxtonLaurenL., AntonellaA.LavelanetAntonellaA., Systematic review of efficacy with extending contraceptive implant duration, „International Journal of Gynaecology and Obstetrics: The Official Organ of the International Federation of Gynaecology and Obstetrics”, 144 (1), 2019, s. 2–8, DOI: 10.1002/ijgo.12696, ISSN1879-3479, PMID: 30343503, PMCID: PMC7379677 [dostęp 2021-01-06](ang.).
scbt.com
datasheets.scbt.com
Safety Data Sheet. Etonogestrel, Santa Cruz Biotechnology, 26 września 2015, SC-211493 [dostęp 2021-01-06](ang.). Brak numerów stron w książce
LaurenL.ThaxtonLaurenL., AntonellaA.LavelanetAntonellaA., Systematic review of efficacy with extending contraceptive implant duration, „International Journal of Gynaecology and Obstetrics: The Official Organ of the International Federation of Gynaecology and Obstetrics”, 144 (1), 2019, s. 2–8, DOI: 10.1002/ijgo.12696, ISSN1879-3479, PMID: 30343503, PMCID: PMC7379677 [dostęp 2021-01-06](ang.).