[1]
R. H. Saddam Saad and P. D. layth Dawud Salman, “Interrogative Words: Types and Usage at Al-Rummani’s Explanation of Sibawayh Book”, https://www.iasj.net/iasj/journal/48/issues, vol. 1, no. 61 البصرة, pp. 53–90, Sep. 2025.