Kurnia, Anwar; Suryana, Mohammad (2007). Sejarah 3: Smp Kelas IX (in Indonesian). Yudhistira Ghalia Indonesia. ISBN978-979-019-140-2. Archived from the original on 16 December 2021. Retrieved 16 December 2021.
Kurnia, Anwar; Suryana, Mohammad (2007). Sejarah 3: Smp Kelas IX (in Indonesian). Yudhistira Ghalia Indonesia. ISBN978-979-019-140-2. Archived from the original on 16 December 2021. Retrieved 16 December 2021.