Sandi, D., and D. Yasmin. “The Influence Of Work Environment And Motivation On Employee Spirit At Pt Perkebunan Nusantara IV, Gunung Meliau Palm Oil Mill Work Unit”. EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi Dan Bisnis, Vol. 12, no. 4, Oct. 2024, pp. 3383–3390, doi:10.37676/ekombis.v12i4.6621.