H. L. L. Putri and Nasruddin, “ANALYSIS OF THE SPATIAL PATTERN OF OIL PALM TREES IN BLOCKS N39 AND P39 IN PT. NUSANTARA SAWIT PERSADA”, J. GEOGR. Geogr. dan Pengajarannya, vol. 23, no. 2, pp. 339–352, Dec. 2025.