Van Melkebeke, Sven, and Louise Cardoso de Mello. “From the Amazon to the Congo Valley : A Comparative Study on the Violent Commodification of Labour during the Rubber Boom (1870s-1910s).” Commodity Frontiers and Global Capitalist Expansion : Social, Ecological, and Political Implications from the Nineteenth Century to the Present Day, edited by Sabrina Joseph, Palgrave Macmillan, 2019, pp. 137–81, doi:10.1007/978-3-030-15322-9_6.