“The Growth of Oil Palm (Elaeis guineensis Jacq.) Seedlings with the Application of Different Arbuscular Mycorrhiza Fungi and Various Phosphorous Dosages”, j Trop. Soils, vol. 23, no. 3, pp. 117–124, Mar. 2019, doi: 10.5400/jts.2018.v23i3.117-124.