H. Rajagukguk, B. Sibarani, and I. . Lumbantoruan, “The Effect of Anxiety and Mental Toughness Toward Bataknese Student’s English-Speaking Ability of Tenth Grade at SMA N 3 Nagasaribu”, J. Humanities Educ. Dev., vol. 6, no. 3, pp. 19–27, Jun. 2024, doi: 10.22161/jhed.6.3.4.