Nita, Fatma Rahayu, and Oikurema Purwati. “Revealing the Philosophical Foundation in English Textbook for Vocational School Students Grade X and Curriculum 2013”. Voices of English Language Education Society, vol. 5, no. 1, Apr. 2021, pp. 27-35, doi:10.29408/veles journal.v5i1.3036.