Saffa M. Massaquoi, Prof. Adolphus Johnson, Dr. Saffa B. Massaquoi, and Kenneth L. Mangoh. “Productivity and Economic Analysis of Technical Efficiency of Cocoa Production in Kailahun District, Eastern Sierra Leone”. International Journal of Recent Innovations in Academic Research 6, no. 4 (April 22, 2022): 28–47. Accessed July 3, 2022. https://ijriar.com/index.php/ijriar/article/view/260.