References
- Garn S.M. Tendency toward greater stature in American Black children. American Journal of Diseases of Children 1973; 126: 164–166
- Tanner J.M. Growth at Adolescence2nd edition. Blackwell Scientific Publications, Oxford 1962
- van Wieringen J.C., Wafelbakker F., Verbrugge H.P., de Haas J.H. Growth Diagrams 1965, Netherlands. Wolters-Noordhoff, Groningen 1971