Onukwulu, E. C., J. E. Fiemotongha, A. N. Igwe, and C. P.-M. Ewin. “Strategic Contract Negotiation in the Oil and Gas Sector: Approaches to Securing High-Value Deals and Long-Term Partnerships”. Journal of Advance Multidisciplinary Research, vol. 3, no. 2, Oct. 2024, pp. 44-61, https://www.synstojournals.com/multi/article/view/144.