OLOMU BABATUNDE OLUKAYODE; ADEWUMI EYITAYO FOLASADE (PH.D); ALAO OLADIMEJI DAVID (PH.D). NIGERIA CUSTOMS SERVICE, SOURCES OF INTELLIGENCE AND BORDER SECURITY. Singaporean Journal of Business Economics and Management, [S. l.], v. 6, n. (10), p. 48–56, 2018. Disponível em: https://www.singaporeanjbem.com/index.php/SJBEM/article/view/461. Acesso em: 21 may. 2026.