Kippley SK, Kippley JF (Kasım–Aralık 1972). "The relation between breastfeeding and amenorrhea". Journal of Obstetric, Gynecologic, & Neonatal Nursing. 1 (4). ss. 15-21. doi:10.1111/j.1552-6909.1972.tb00558.x. PMID4485271.
Sheila Kippley (Kasım–Aralık 1986). "Breastfeeding survey results similar to 1971 study". The CCL News. 13 (3). s. 10. and (January–February 1987) 13 (4): 5.
Kippley SK, Kippley JF (Kasım–Aralık 1972). "The relation between breastfeeding and amenorrhea". Journal of Obstetric, Gynecologic, & Neonatal Nursing. 1 (4). ss. 15-21. doi:10.1111/j.1552-6909.1972.tb00558.x. PMID4485271.
Sheila Kippley (Kasım–Aralık 1986). "Breastfeeding survey results similar to 1971 study". The CCL News. 13 (3). s. 10. and (January–February 1987) 13 (4): 5.
Kippley SK, Kippley JF (Kasım–Aralık 1972). "The relation between breastfeeding and amenorrhea". Journal of Obstetric, Gynecologic, & Neonatal Nursing. 1 (4). ss. 15-21. doi:10.1111/j.1552-6909.1972.tb00558.x. PMID4485271.
Sheila Kippley (Kasım–Aralık 1986). "Breastfeeding survey results similar to 1971 study". The CCL News. 13 (3). s. 10. and (January–February 1987) 13 (4): 5.
Kippley SK, Kippley JF (Kasım–Aralık 1972). "The relation between breastfeeding and amenorrhea". Journal of Obstetric, Gynecologic, & Neonatal Nursing. 1 (4). ss. 15-21. doi:10.1111/j.1552-6909.1972.tb00558.x. PMID4485271.
Sheila Kippley (Kasım–Aralık 1986). "Breastfeeding survey results similar to 1971 study". The CCL News. 13 (3). s. 10. and (January–February 1987) 13 (4): 5.