1. Brewster DP: You Can Breastfeed...Even in Special Situations. Emmaus, PA: Rodale Press, 1979, pp. 440-449
2.
2. Huggins K: The Nursing Mother's Companion, Revised Edition. Boston, MA: Harvard Common Press, 1990; pp. 181-182
3.
3. La Leche League International: The Womanly Art of Breastfeeding, Fourth Revised Edition. Franklin Park, IL: La Leche League International, 1991; pp. 154-157
4.
4. Lauwers J, Woessner C: Counseilng the Nursing Mother. Garden City Park, NY: Avery Publishing Group, 1983; p. 273-273
5.
5. Lawrence R: Breastfeeding: A Guide for the Medical Profession, 3rd Edition. St. Louis, MO: CV Mosby Company, 1989, p. 251-251
6.
6. Riordan J: A Practical Guide to Breastfeeding. St. Louis, MO: CV Mosby Company, 1983; pp. 68-69
7.
7. Tully MR, Overfield M: Breastfeeding Counseling Guide. Raleigh, NC: Lactation Consultants of North Carolina, 1989; p. 85-85