Jorge Henrique Caldeira de Oliveira, Iliane Jesuina da Silva, and Lelio Luiz de Oliveira. 2014. “Land Prices and Negotiation Patterns in Coffee Economy: Region of RibeirAo Preto Between 1874 and 1899”. Global Journal of Human-Social Science 14 (D6):25-34. https://socialscienceresearch.org/index.php/GJHSS/article/view/100745.