ETUK, Ette Harrison. Cluster analysis of Nigerian real GDP. Ianna Journal of Interdisciplinary Studies , [S. l.], v. 2, n. 1, p. 119–132, 2021. Disponível em: https://iannajournalofinterdisciplinarystudies.com/index.php/1/article/view/38. Acesso em: 30 apr. 2024.