Sopian, N. D., S. V. Lumowa, M. Masitah, and M. Tindangen. “The Effect of a Combination of Turmeric Rhizome Extract (Curcuma Longa L.) and Temulawak Rhizome Extract (Curcuma Xanthorrhiza R.) on the Mortality of Grayak Caterpillar Pests (Spodoptera Litura F.)”. Edumaspul: Jurnal Pendidikan, Vol. 9, no. 2, Oct. 2025, pp. 1257-63, doi:10.33487/edumaspul.v9i2.9157.