José Luiz Ratton

• https://www.cambridge.org/core/journals/journal-of-latin-american-studies/article/institutional-reform-and-violence-reduction-in-pernambuco-brazil/A2C5219523AE6D05B012AD857964627E

• https://igarape.org.br/wp-content/uploads/2014/07/artigo-8-p2.pdf Ratton et al. 2014

• https://www.cartacapital.com.br/revista/820/repressao-e-pouco-7332.html

• De Volta ao Passado José Luiz Ratton (Artigo publicado no Jornal do Commercio no dia 17 de dezembro de 2017) http://www.academia.edu/35469043/De_Volta_ao_Passado