Maengkom, F.R., and Albert Schrauwers. “BUKU HARIAN PERJALANAN DARI TOJO KE MORI (SULAWESI TENGAH): Dan Kembali Ke Danau Poso (11-27 April 1906)”. LOBO: Annals of Sulawesi Research, vol. 3, no. S2, Apr. 2022, pp. 42-53, https://lobo.journals.yorku.ca/index.php/default/article/view/23.