Péterné Baranyi, Rita. “The ‘3win’ System of Eco-Labeling; An Economic Analysis of the Hungarian System Based on in-Depth Interview Research”. The Hungarian Journal of Marketing and Management 45, no. 4 (October 1, 2019): 68–77. Accessed May 3, 2026. https://journals.lib.pte.hu/index.php/mm/article/view/483.