Estrella A. The effects of Voluntary Sustainability Standards in the economy of smallholder farmers in Latin America: An investigation of the impact pathways of sustainability standards leading to improved economic outcomes for certified coffee producers [Internet]. Münster: TESTINSTANZ: Wissenschaftliche Schriften der Universität Münster; 2020 [cited 2026 May 7]. ( , editor. Wissenschaftliche Schriften der Universität Münster, Reihe VII: Sozialwissenschaften; vol. Band 29). Available from: https://www.uni-muenster.de/EbooksTestInstallation/index.php/series/catalog/book/281