Napitupulu, D. ., Sutaryat Trisnamansyah, Husen Saeful Insan, & Waska Warta. (2019). Effect of Work Environment and Work Motivation on Employee Performance in Faculty of Forestry University North Sumatra. Journal of Economicate Studies, 3(2), 49–61. https://doi.org/10.32506/joes.v3i2.637