Prof. Resty C. Samosa, John Glenn C. Maylas, and Gregor L. Macalam. “ONLINE – MERGE – OFFLINE (OMO) CLASSROOM MODEL AS INNOVATION TO IMPROVE STUDENTS’ MASTERY LEVEL AND ATTITUDE IN TEACHING BALANCING CHEMICAL EQUATION”. World Bulletin of Social Sciences, vol. 3, Oct. 2021, pp. 28-33, https://scholarexpress.net/index.php/wbss/article/view/157.