Kholidah M, Arifiana IY, Laili N. Low Self-Confidence Among Vocational High School Students in Sidoarjo: A Case Study. IJIE [Internet]. 2026 Aug. 6 [cited 2026 Oct. 11];9(3):175-86. Available from: https://journals.researchparks.org/index.php/IJIE/article/view/5779