ALSWARY, T. I. A., and M. S. A. SULAIMAN. “A CORPUS-BASED CONTRASTIVE ANALYSIS OF CERTAINTY AND DOUBT ADVERBIALS IN ACADEMIC DISCOURSE BY NATIVE ENGLISH AUTHORS AND NON-NATIVE KURDISH AUTHORS ”. Journal of Duhok University, Vol. 26, no. 2, Oct. 2023, pp. 604-18, doi:10.26682/hjuod.2023.26.2.37.