Lauersen, Niels H.; Stukane, Eileen (1998). The Complete Book of Breast Care (1st Trade Paperback изд.). New York: Fawcett Columbine/Ballantine. ISBN978-0-449-91241-6. „...there is no medical reason to wear a bra, so the decision is yours, based on your own personal comfort and aesthetics. Whether you have always worn a bra or always gone braless, age and breastfeeding will naturally fcause your breasts to sag.”
Rinker, B; Veneracion, M; Walsh, C (2008). „The Effect of Breastfeeding on Breast Aesthetics”. Aesthetic Surgery Journal. 28 (5): 534—7. PMID19083576. doi:10.1016/j.asj.2008.07.004. Генерални сажетак – LiveScience (2. 11. 2007).
Rinker, B; Veneracion, M; Walsh, C (2008). „The Effect of Breastfeeding on Breast Aesthetics”. Aesthetic Surgery Journal. 28 (5): 534—7. PMID19083576. doi:10.1016/j.asj.2008.07.004. Генерални сажетак – LiveScience (2. 11. 2007).
Rinker, B; Veneracion, M; Walsh, C (2008). „The Effect of Breastfeeding on Breast Aesthetics”. Aesthetic Surgery Journal. 28 (5): 534—7. PMID19083576. doi:10.1016/j.asj.2008.07.004. Генерални сажетак – LiveScience (2. 11. 2007).