ISHAK SAAT and AHMAD ZAINUDIN HUSIN, Institusi Raja: Pelbagai Kisah Kesultanan Alam Melayu. Penerbit UTHM, 2021. Accessed: Jul. 01, 2024. [Online]. Available: https://penerbit.uthm.edu.my/omp/index.php/penerbituthm/catalog/book/8