Rajagukguk, Try Putra. “Imperative Sentences For The Mangompoi Jabu Ceremony For The Toba Batak Ethnic: Study Of Speech Actions”. L’Geneus : The Journal Language Generations of Intellectual Society 9, no. 1 (April 30, 2020): 6-10. Accessed July 28, 2026. https://www.ejournal.iocscience.org/index.php/geneus/article/view/2141.