Kusbiantoro, Dedi, Khairunnisyah Nasution, Dian Hendrawan, Yenny Asbur, and Yuyuk Purwaningrum. 2022. “Pendapatan Usahatani Wortel Di Desa Surbakti, Kecamatan Simpang Empat, Kabupaten Karo”. Buletin Poltanesa 23 (2):756-61. https://doi.org/10.51967/tanesa.v23i2.1812.