Gastal, D. A., R. T. Pinheiro, and D. P. Vazquez. “Self-Efficacy Scale for Brazilians With Type 1 Diabetes”. São Paulo Medical Journal, vol. 125, no. 2, Mar. 2007, pp. 96-101, https://periodicosapm.emnuvens.com.br/spmj/article/view/2080.