Riawanto, R., I. Harianti, and M. H. Rohmah. “THE LEGAL POWER OF THE AUTHENTICITY OF BIPARTITE JOINT AGREEMENT BETWEEN PT PLATINUM CERAMICS INDUSTRY SURABAYA AND WORKERS”. JILPR Journal Indonesia Law and Policy Review, Vol. 2, no. 3, June 2021, pp. 138-43, doi:10.56371/jirpl.v2i3.52.