ADESANYA, O. D.; FADIYA, B. O. Examining the effect of Strategic Planning on operational efficiency of Event Management firms in Lagos State . International Journal of Intellectual Discourse, [S. l.], v. 9, n. 2, 2026. Disponível em: https://www.ijidjournal.org/index.php/ijid/article/view/1190. Acesso em: 10 sep. 2026.