APA-referens (7:e uppl.)
Varney, H. (2016). A history of midwifery in the United States: The midwife said fear not. Springer Publishing Company.
Chicago-referens (17:e uppl.)
Varney, Helen. A History of Midwifery in the United States: The Midwife Said Fear Not. New York, New York: Springer Publishing Company, 2016.
MLA-referens (9:e uppl.)
Varney, Helen. A History of Midwifery in the United States: The Midwife Said Fear Not. Springer Publishing Company, 2016.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.