“A Developmental-Longitudinal Study of Request External Modifiers in Authentic and Elicited Data”. ALUSTATH JOURNAL FOR HUMAN AND SOCIAL SCIENCES 58, no. 1 (March 15, 2019): 97–120. Accessed July 6, 2025. https://alustath.uobaghdad.edu.iq/index.php/UJIRCO/article/view/839.