Christian, Ronaldo, and Denny Rifani. “DIGITAL MARKETING EFFORTS IN INCREASING SALES RESULTS OF PRISONERS’ WORK ACTIVITIES AT CIPINANG CLASS 1 PRISON”. Journal of Correctional Issues 4, no. 2 (December 30, 2021): 161-171. Accessed February 9, 2023. https://journal.poltekip.ac.id/jci/article/view/73.