Sijabat A, Siahaan R, Sinaga K, Sinaga C. Sosialisasi penulisan buku ajar bagi guru-guru di smp negeri 3 jorlang hataran. J. Tridarma: PkM [Internet]. 2023May30 [cited 2026Apr.19];6(1):28-33. Available from: https://iocscience.org/ejournal/index.php/abdimas/article/view/4088