K. Situmorang, D. Y. Nugroho, S. M. Pramusita, and M. R. Sihombing, “English as a Lingua Franca Awareness of the Pre-service English Teachers in Assessing Students’ Speaking Assignment”, OKARA JURNAL BAHASA DAN SASTRA, vol. 17, no. 1, pp. 1-13, May 2023.