Rajagukguk, Holmes, Berlin Sibarani, and Irfan Lumbantoruan. “The Effect of Anxiety and Mental Toughness Toward Bataknese Student’s English-Speaking Ability of Tenth Grade at SMA N 3 Nagasaribu”. International Journal of Humanities and Education Development (IJHED) 6, no. 3 (June 22, 2024): 19–27. Accessed October 16, 2024. https://theshillonga.com/index.php/jhed/article/view/370.