1. Abiodun. (2013) in Eneji, M. A., Odey, F. A., & Bullus, M. L. (2016). Diversification of Nigerian’s economy; Impact of
tourism on sustainable development in Nigeria. International Journal of Research in Humanities and Social Studies,
3(5): 36–44.
2. Abomeh, O. S. (2012). Hospitality and Tourism Manpower Training and Education in Nigeria. Afro Asian Journal of Social Science, 3(3), 1–18.
3. Adebakin, M. A. (2012). National Security Challenges and Sustainable Economic Development. EVIDENCE from Nigeria, 1, 10–20.
4. Adejumo, A. A. (2011, December 16). Problems and Challenges of Insecurity of Nigeria. News Diary Online, pp. 4–9.
5. Aduloju, A. A., & Pratt, O. O. (2014). Human Security and Developmental Crisis in the Contemporary West Africa. Journal of Human Security, 1(1), 46–58. https://doi.org/10.12924/johs2014.10010046.