1. American College of Nurse-Midwives Midwives Are Primary Care Providers and Leaders of Maternity Care Homes (Position Statement) 2012 http://www.midwife.org/ACNM/files/ACNMLibraryData/UPLOADFILENAME/000000000273/Primary%20Care%20Position%20Statement%20June%202012.pdf
2. Timeline of essential American College of Nurse-Midwives documents, clinical bulletins, and strategies for liability risk reduction;Dawley;J Midwifery Womens Health,2005
3. Nurse-midwifery practice in the United States, 1982;Adams;Am J Public Health,1984
4. CNMs and primary care: Practice models and types of service;Scupholme;Quickening,1993