Playfair, W. S. (1876). A treatise on the science and practice of midwifery. Henry C. Lea.
Chicago-referens (17:e uppl.)Playfair, William Smoult. A Treatise on the Science and Practice of Midwifery. Philadelphia: Henry C. Lea, 1876.
MLA-referens (8:e uppl.)Playfair, William Smoult. A Treatise on the Science and Practice of Midwifery. Henry C. Lea, 1876.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.