Marlia, Marlia. “The Effect of Vocabulary Self-Collection Strategy on English Vocabulary Mastery: A Study of the Indonesian High School Students”. FOSTER: Journal of English Language Teaching 5, no. 4 (May 22, 2025): 256-270. Accessed April 17, 2026. https://www.foster.pbi-iainpalopo.ac.id/index.php/contents/article/view/236.