“Efektivitas Cacing Tanah Pheretima hupiensis, Edrellus sp. dan Lumbricus sp. dalam Proses Dekomposisi Bahan Organik”, j Trop. Soils, vol. 14, no. 2, pp. 149–158, May 2009, doi: 10.5400/jts.2009.v14i2.149-158.