I. Sihite, B. Simanjuntak, K. E. Simanungkalit, and D. N. Siallagan, “The Value of Ecological Wisdom in the Oral Story of the Toba Batak "Tombak Sulu Sulu": An Ethnographic Study ”, JLL, vol. 5, no. 5, pp. 471-482, Oct. 2024.