AOCG Committee Opinion: Exercise During Pregnancy and the Postpartum Period. Number 267, June 2002.
Lockwood, C. Guidelines for Perinatal Care. 7th ed. AAP and ACOG. 2012.
Artal, R., et al. Recommendations for exercise during pregnancy and the postpartum period. Accessed September 19, 2014 from http://www.UpToDate.com.