Karahan Uysal, ?zlem et al. (2012) „Consumer Willingness-To-Pay for Different Organic Certification Logos in Turkey”, Revista de Cercetare si Interventie Sociala, 39, pp. 154–175. Disponibil la: https://www.rcis.ro/journal/article/view/704-consumer-willingness-to-pay-for-different-organic (Data accesării: 7 noiembrie 2026).