Lekue, Jekey, and Jonah Charles Tambari. “Relationship Integration: Recipe for Marketing Performance in Downstream Petroleum Sector in Nigeria”. International Journal of Intellectual Discourse 4, no. 3 (August 13, 2022): 1–12. Accessed January 27, 2026. https://www.ijidjournal.org/index.php/ijid/article/view/102.