Neinstein, Lawrence S., ed. Adolescent health care: a practical guide. Vol. 414. Lippincott Williams & Wilkins, 2008.
Emmanuel & Bokor, 2017
Emmanuel, Mickey, and Brooke R. Bokor. “Tanner stages.” (2017).
Mao & Dalvie, 2016
Mao, Jun, and Mohamed Aqiel Dalvie. “Anthropometric measurements, serum reproductive hormonal levels and sexual development among boys in the rural western cape, South Africa.” International journal of environmental research and public health 13.12 (2016): 1185.
Joustra et al., 2015
Joustra, Sjoerd D., et al. “New reference charts for testicular volume in Dutch children and adolescents allow the calculation of standard deviation scores.” Acta paediatrica 104.6 (2015): e271-e278.
Tomova et al., 2010
Tomova, Analia, et al. “Growth and development of male external genitalia: a cross-sectional study of 6200 males aged 0 to 19 years.” Archives of pediatrics & adolescent medicine 164.12 (2010): 1152-1157.