1. “The Rhetorical Move Strategies of PhD Theses’ Introductions by Malaysian Writers.” PhD Thesis submitted to School of Education, LaTrobe University, Australia. 2012.
  2. “Authorial self-representations in English Research Articles in Applied Linguistics Written by Native English and Thai Writers.” PhD Thesis submitted to Dean Awang Had Salleh Graduate School of Arts and Sciences, Universiti Utara Malaysia, Sintok, Kedah, Malaysia. December 2017.
  3. “Genre Analysis: Studying Research Articles of Business and Management Sciences Using Swalesian and Hylandian Approaches.” PhD Thesis submitted to Faculty of Higher Studies, National University of Modern Languages, Islamabad, Pakistan.  November 2018.
  4. “Negotiation of Meaning in Online Forum Discussions-A Textual Analysis”. PhD Thesis submitted to Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia. January 2019.