Khan, Rehmat Ullah, et al. “Constructing Narrative Space: A Systemic Functional Analysis of Prepositional Phrases in O. Henry’s The Last Leaf ”. World of Semantics: Journal of Philosophy and Linguistics, vol. 3, no. 9, Sept. 2025, pp. 62-72, https://wos.semanticjournals.org/index.php/JPL/article/view/255.