LIBROS DE REFERENCIA
1.Jay Gordon, M.D. and Brenda Adderly, M.H.A., Brighter Baby (Washington, DC: Lifeline Press, 1999), 79.
2.Dr. Susan
3.Dr. Susan
4.Dr. Susan
5.Dr. Sarah Brewer, Super Baby (London: Thorsons, 1998), 70.
6.Dr. Sarah Brewer, Super Baby (London: Thorsons, 1998),
7.Dr. Sarah Brewer, Super Baby (London: Thorsons, 1998), 229.
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