Puberty. Planned Parenthood. https://www.plannedparenthood.org/learn/teens/puberty. Accessed December 2019.
US Department of Health and Human Services. Office on Women’s Health. Puberty. https://www.girlshealth.gov/body/puberty/. Updated April 15, 2014. Accessed December 2019.
Physical development in girls: what to expect during puberty. American Academy of Pediatrics. https://www.healthychildren.org/English/ages-stages/gradeschool/puberty/Pages/Physical-Development-Girls-What-to-Expect.aspx. Updated June 4, 2019. Accessed December 2019.
Girls and puberty. American Academy of Family Physicians. https://familydoctor.org/girls-and-puberty/. Updated January 2017. Accessed December 2019.
Wolf RM, Long D. Pubertal development. Pediatrics in Review. July 2016, 37 (7) 292-300; DOI: https://doi.org/10.1542/pir.2015-0065.