Rizka Khoirina Harahap, Hyssa Sihotang, Ruth Natali, Pesta Romauli, Nurmaidah, and Laurensia Mesri Perangin Angin, “The Role of K 13 in Improving Student Learning Outcomes”, MARCOPOLO, vol. 1, no. 5, pp. 275–290, Jun. 2023.