Hutasoit, Silvia Lestari, Fenty Debora Napitupulu, and Febrika Dwi Lestari. 2023. “Analysis Of Coherence Through Thematic Progression In The Undergraduate Thesis Background Written By English Education Students Of HKBP Nommensen Medan University”. Innovative: Journal Of Social Science Research 3 (6):917-27. https://j-innovative.org/index.php/Innovative/article/view/6344.