M. . Wahyudi, Y. . Sepriani, B. . Ainy Dalimunthe, and D. . Hariyati Adam, “The Effect of Npk 16 16 16 Fertilizer and Time of Application on the Growth of Red Chili Plants in Afdeling 2 Plantation, West Bilah District, Labuhanbatu Regency”, IJSE, vol. 2, no. 3, pp. 79–84, Aug. 2022.