1. Caffeine and Pregnancy Outcome
Bonnie Worthington-Roberts, PhD, Ann Weigle, RD, MS 
JOGN nursing 
Volume 12, Issue 1, Pages (January 1983)
DOI: /j tb01047.x
Copyright © 1983 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions

2. Figure 1 Caffeine content of common beverages.
JOGN nursing  , 21-24DOI: ( /j tb01047.x)
Copyright © 1983 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions

3. Figure 2 Caffeine content of common over-the-counter medications.
JOGN nursing  , 21-24DOI: ( /j tb01047.x)
Copyright © 1983 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions