Widaningsih, Lilis, Mohammad Syaom Barliana, Tutin Aryanti, and & Elly Malihah. 2018. “Inheritance Pattern of Vocational Skills: An Ethno-Andragogic Study on Construction Workers in Indonesia”. Journal of Technical Education and Training 10 (2). https://publisher.uthm.edu.my/ojs/index.php/JTET/article/view/2312.