BHATTA, Gopal D. Willingness to Pay for Organic Vegetables in Kathmandu Valley. Economic Journal of Nepal, [S. l.], v. 32, n. 1, p. 35–45, 2011. Disponível em: https://nepjol.info/index.php/EJON/article/view/5004. Acesso em: 13 apr. 2025.