Pinheiro, Patrícia Matias, Márcia Maria Tavares Machado, Ana Cristina Lindsay, y Ana Valeska Siebra e Silva. 2010. «Prevalence of Breastfeeding Among Women Attending a Baby-Friendly Hospital in Quixada, Ceara». Rev Rene 11 (2). http://periodicos.ufc.br/rene/article/view/4534.