Turki, H.Y. et al. 2020. A Cross-Sectional Study of Refusal Speech Act Used by Iraqi Undergraduate Students: of English in Relation to the Academic Level. KOYA UNIVERSITY JOURNAL OF HUMANITIES AND SOCIAL SCIENCES. 3, 1 (Jun. 2020), 166–173. DOI:https://doi.org/10.14500/kujhss.v3n1y2020.pp166-173.