Almuntadzar, I., M. S. Maarif, and L. M. Baga. “STRATEGY TO IMPROVE LABOR PRODUCTIVITY IN PT FREEPOT INDONESIA’S UNDERGROUND MINING PROJECT”. Jurnal Aplikasi Bisnis Dan Manajemen (JABM), Vol. 7, no. 2, May 2021, p. 241, doi:10.17358/jabm.7.2.241.