Waldemar, Waldemar, Nia Kartika, and Siti Muawanah Robial. “PRODUCTIVITY ANALYSIS OF FLOOR HERONING WORKERS USING WORK SAMPLING METHOD”. Jurnal Pensil : Pendidikan Teknik Sipil 11, no. 2 (May 21, 2022): 162–170. Accessed November 24, 2024. https://journal.unj.ac.id/unj/index.php/jpensil/article/view/25474.