Nurtjahyo, S. N., N. A. . Drajati, and S. Sumardi. “G.R.A.S.P.S Strategy: Decreasing Students’ Difficulties in Writing Persuasive Text”. International Journal of Language Teaching and Education, vol. 3, no. 2, Dec. 2019, pp. 158-72, doi:10.22437/ijolte.v3i2.7391.