Petschelies, E. 2013. 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. 2, 2 (dez. 2013), 130–132.