PORRAS BARRENECHEA, Raul. Quipu y Quilca. Boletín APAR, [S. l.], v. 6, n. 22, p. pp. 981–993, 2015. DOI: 10.70748/ba.22.2015.268. Disponível em: https://revistas.coarpe.org.pe/index.php/BoletinApar/article/view/268. Acesso em: 17 ago. 2026.