M. Nurhidayat, R. Abigani, L. Virgiyanti, F. Murati, and N. Nomeritae, “ANALISIS FAKTOR KELELAHAN KERJA DENGAN METODE CHI-SQUARE PADA SISTEM KERJA LONGSHIFT OPERATOR HD SANY SKT80S : ANALYSIS OF WORK FATIGUE ON LONGSHIFT WORKING TIME BY HD SANY SKT80S OPERATOR USING CHI-SQUARE METHOD”, JTP, vol. 23, no. 2, pp. 58–62, Aug. 2023.