M. Mahmud, M. H. Abd Halim, and M. Saidin, “Kedah Tua: Warisan Perdagangan Rempah Alam Melayu dan Implikasinya kepada Pembangunan Ekonomi Komuniti Kontemporari: (Ancient Kedah: The Heritage of the Malay Spice Trade and Its Implications for Contemporary Community Economic Development)”, ahjmm, vol. 4, pp. 122–148, Jul. 2026, doi: 10.32890/ahjmm2026.4.7.