Okwara, C.C., Adnan, M. and Khurshid, F. 2026. THE IMPACT OF INFORMAL STAKEHOLDER INFLUENCE MECHANISMS ON STAKEHOLDER ENGAGEMENT EFFECTIVENESS IN NIGERIAN ROAD INFRASTRUCTURE PROJECTS. JOURNAL OF SOCIAL SCIENCES DEVELOPMENT. 5, 9 (Nov. 2026), 152–172. DOI:https://doi.org/10.59075/jssd.v5i9.427.