COVERO, Rolando. May Pera sa Gera. Social Sciences and Development Review, Manila, Philippines, v. 7, n. 1, p. 67–74, 2016. DOI: 10.70922/zagq3r83. Disponível em: https://publishing.pup.edu.ph/ojs/index.php/SSDR/article/view/346. Acesso em: 7 aug. 2025.