Hashim, Suhaizal, et al. “Observation on Teachers’ Readiness for Implementation of Higher Order Thinking Skills (HOTS) in Technical and Vocational Education and Training (TVET)”. Online Journal for TVET Practitioners, vol. 7, no. 1, Mar. 2022, pp. 31-40, https://penerbit.uthm.edu.my/ojs/index.php/oj-tp/article/view/10316.