Somba, Y., N. . Liando, and T. Kumayas. “A STUDY ON TYPES OF VOCABULARY TASKS IN EFL TEXTBOOK ENGLISH ON THE SKY 1”. JoTELL : Journal of Teaching English, Linguistics, and Literature, vol. 1, no. 4, Apr. 2022, pp. 528-49, doi:10.36582/jotell.v1i4.3904.