Tarihoran, P., Siregar, A. Z., & Marheni. (2020). Diversity Index of Insect Species on Sorghum Plantations in Kolam Village, Percut Sei Tuan District, Deli Serdang. Indonesian Journal of Agricultural Research, 3(2), 89 - 104. https://doi.org/10.32734/injar.v3i2.3865