Petschelies, E. “LANGER, Erick D. Expecting Pears from an Elm Tree: Franciscan Missions on the Chiriguano Frontier in the Heart of South America, 1830 – 1949. Durham NC: Duke University Press, 2009, 375p”. Revista Ñanduty, vol. 2, nº 2, dezembro de 2013, p. 130-2, https://ojs.ufgd.edu.br/index.php/nanduty/article/view/2568.