Fernandes, D. A., P. Gala, and J. M. Rego. “Answers to a Marxist Critic of the Rhetorical and Pragmatic Perspectives in Economics”. Brazilian Journal of Political Economy, vol. 28, no. 1, Jan. 2008, pp. 155-6, https://centrodeeconomiapolitica.org/repojs/index.php/journal/article/view/519.