Karahan Uysal, ?zlem et al. (2012) « Consumer Willingness-To-Pay for Different Organic Certification Logos in Turkey », Revista de Cercetare si Interventie Sociala, 39, p. 154–175. Disponible sur: https://www.rcis.ro/journal/article/view/704-consumer-willingness-to-pay-for-different-organic (Consulté le: 7 novembre 2026).