Elisabet Sinaga, Deski Ramosta Simanjuntak, Chelsi Saragih, Elsa Manurung, and Basar Lolo Siahaan, “The Effect of Higher Order Thinking Skills (HOTS) Questions on Student Writing Skills at SMA Negeri 3 Pematangsiantar”, ESA, vol. 2, no. 2, pp. 175–206, Mar. 2023.