1. Afuah, A. (2003). Innovation management: Strategies, implementation and profits. Oxford University Press.
2. Agarwal, A., Kapur, D., McHale, J., & Oettl, A. (2011). Brain drain or brain bank? The impact of skilled emigration on poor-country innovation. Journal of Urban Economics, 69(1), 43–55. https://doi.org/10.1016/j.jue.2010.06.003
3. Agbadudu, A. B. (2004). Statistics for business and social science. Uri Publishing.
4. Akinpelu, O. (2020, January 29). NCC stats 2019: Nigerian telecoms companies gained 14 million new internet subscribers in 12 months. Technaxt. https://technext24.com/2020/01/29/ncc-stats-2019-nigerian-telecoms-companies-gained-14-million-new-internet-subscribers-in-12-months/
5. Alchian, A., & Demsetz, H. (1972). Production, information costs and economic organization. American Economic Review, 62(5), 777–795. https://www.jstor.org/stable/1815199