Satriawan, H. et al. 2017. SOIL CONSERVATION TECHNIQUES IN OIL PALM CULTIVATION FOR SUSTAINABLE AGRICULTURE. Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management). 7, 2 (Aug. 2017), 178–183. DOI:https://doi.org/10.29244/jpsl.7.2.178-183.