Jamri, M. H., N. . Ismail, A. R. . Ridzuan, N. H. . Rosli, N. S. . Abdul Rani, N. A. N. . Ibrahim, H. . Hassan, and R. . Sultan Mohideen. “KEBERKESANAN PENGGUNAAN MEDIUM PAPAN TANDA DALAM KEMPEN BAHAYA PENYALAHGUNAAN DADAH: EFFECTIVENESS OF THE USE OF BILLBOARDS IN THE ANTI-DRUG ABUSE CAMPAIGN”. I-IECONS E-Proceedings, vol. 10, no. 1, Oct. 2023, pp. 888-93, doi:10.33102/iiecons.v10i1.100.