Riordan J. Anatomy and Physiology of Lactation. In: J. Riordan, K. Wambach, Breastfeeding and Human Lactation. 4rd Ed. Boston etc. Jones and Bartlett, 2010
Kent JC1, Mitoulas LR, Cregan MD, Ramsay DT, Doherty DA, Hartmann PE. Volume and frequency of breastfeedings and fat content of breast milk throughout the day. Pediatrics. 2006 Mar;117(3):e387-95.