M. de A. Frota, J. A. Bezerra, M. L. de S. Férrer, M. C. Martins, and V. G. Silveira, “Maternal perception regarding child care and development - doi:10.5020/18061230.2011.p245”, Rev Bras Promoc Saúde, vol. 24, no. 3, pp. 245–250, Jan. 2012.