Estimating Willingness to Pay For Parks in Peshawar. Pakistan Journal of Commerce and Social Sciences (ISSN 1997-8553), [S. l.], v. 13, n. 4, p. 1057–1067, 2019. Disponível em: https://jes.ac.pk/index.php/jes/article/view/208. Acesso em: 16 oct. 2025.