This article analyzes the modes of appropriation of the discourse on sustainable development in Latin America over the past four decades. Most studies on sustainability use qualitative methods of discourse analysis. Others use quantitative methods, such as the citation-based approach applied to the academic landscape of sustainability science at the global level, or to specific subfields. In this study, we use a hybrid approach that crosses quantitative methods (network analysis based on bibliometrics) and qualitative methods (discourse analysis and literature review) at different spatial and temporal scales. Our research provides a mapping of academic activities in the discursive field of sustainable development in Latin America and shows the dynamics of regional authors within these debates as well as institutions hosting projects, research groups and programs. The paper shows the active and critical participation of Latin American scholars in the debate about sustainability. It maps the consolidation of a Latin American network over time, highlighting the central actors and mediators who have their own discourse and interactions. We also analyze the links between different countries, revealing preferences in cross-national citations. Regarding the content of discussions, we show that reformist, even radical, approaches to sustainability find greater resonance among Latin American scholars.