Gayo, H. ., and P. . Widodo. “An Analysis of Morphological and Syntactical Errors on the English Writing of Junior High School Indonesian Students”. International Journal of Learning, Teaching and Educational Research, vol. 17, no. 4, Apr. 2018, pp. 58-70, https://www.ijlter.myres.net/index.php/ijlter/article/view/683.