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Azizah N, Sudiran S. A Study on Diglossia Used by Helen Keller as The Main Character in George Sullivan’s Novel "Helen Keller". Celtic [Internet]. 2017 Aug. 30 [cited 2024 Nov. 22];2(1):1-18. Available from: https://ejournal.umm.ac.id/index.php/celtic/article/view/4672