Amriza Putra, Abdul Razak Nasution, Mhd. Azhali Siregar. EFFORTS TO ERADICATE MOBILE PHONES IN CLASS II A LANGKAT NARCOTICS PRISON INSTITUTION AS AN EFFORTS TO PREVENT DISTURBANCES TO SECURITY AND ORDER IN PRISON. JISHUP [Internet]. 2024 Sep. 17 [cited 2024 Nov. 4];2(3):707-13. Available from: https://jishup.org/index.php/ojs/article/view/99