R. . Vargas, R. . Bontuyan, J. R. . Galo, J. . Pelin, K. M. . Deasas, and A. . Ugto, “Effects of Grammar Difficulties on Communication Skills of Grade 12 Humanities and Social Sciences Strand Students: Basis for Proposed Intervention”, AASgBCPJMRA, vol. 2, no. 1, Apr. 2020.