Rabelo, Leila Regina, and Dora Lúcia de Oliveira. “Obstetrical nurses’ Perceptions of Their Competence in Assisting Hospital Delivery”. Revista Da Escola De Enfermagem Da USP, vol. 44, no. 1, Mar. 2010, pp. 213-20, https://doi.org/10.1590/S0080-62342010000100030.