Fariña, Efigenia Britz. “Study of Motives, Processes and Consequences of Abortion of a Population Attended at the Obstetrical Emergency Unit of a Maternal Aid Service”. Revista Da Escola De Enfermagem Da USP, vol. 9, no. 2, Aug. 1975, pp. 323-46, https://doi.org/10.1590/0080-6234197500900200323.