WIDIASTUTI, H., SUKARNO, N., DARUSMAN, L. K., GOENADI, D. H., SMITH, S. and GUHARDJA, E. (2016) “Aktivitas fosfatase dan produksi asam organik di rhizosfer dan hifosfer bibit kelapa sawit bermikoriza *) Phosphatase activity and organic acid production in rhizosphere and hyphosphere of mycorrhizal oil palm seedling”, Menara Perkebunan. Bogor, Indonesia, 71(2). doi: 10.22302/iribb.jur.mp.v71i2.164.