1. Final Natality Statistics, 1978,1980
2. Obstetric and pediatric complications of juvenile pregnancy;Battaglia;Pediatrics,1963
3. Obstetrics in adolescents: a controlled study of deliveries by mothers 15 years of age and under;Hulka;Obstet Gynecol,1964
4. The adolescent's first pregnancy: a controlled study;Spellacy;South Med J,1978
5. Experience with teenage pregnancy;Hutchins;Obstet Gynecol,1979