NataliaR., AnwarS., SutandiA., NugrohoB., and CahyonoP., “Soil Chemical and Physical Characteristics in Pineapple Plantation with Different Rate of Yield: Karakteristik Kimia dan Fisika Tanah di Area Pertanaman Nanas dengan Perbedaan Tingkat Produksi”, J. Il. Tan. Lingk., vol. 20, no. 1, pp. 13-18, Apr. 2018.