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Mohan Rathakrishnan, Manvender Kaur, Hisyham Zakaria ,Arumugam Raman. Trello Virtual Learning and Its Effect on Students’ Critical Thinking Skills in Essay Writing. IJAST [Internet]. 2020Apr.17 [cited 2021Sep.20];29(7s):815 -824. Available from: https://sersc.org/journals/index.php/IJAST/article/view/9988