Bharathwaaj. A, Balasubramaniam. P, Sriram. N, Nirmala Devi. M, and Gangai Selvi. R. “A Study on Motivational Factors and the Constraints Faced by Distance Learners of ODL Certificate Course Tea Cultivation Technology”. Archives of Current Research International 24, no. 7 (August 21, 2024): 30–38. Accessed September 21, 2025. https://journalacri.com/index.php/ACRI/article/view/826.