Harianto, D., A. T. Sitanggang, N. S. Ritonga, R. Sianipar, P. G. Siahaan, and R. B. B. P. Angin. “Protection Geographical Indication of Cimpa Tuang Food: Measuring Cultural and Economic Value in Sukalaju Village”. Edumaspul: Jurnal Pendidikan, Vol. 7, no. 2, Oct. 2023, pp. 3428-34, doi:10.33487/edumaspul.v7i2.6909.