Kilowasid, L. M. H., T. S. Syamsudin, F. X. Susilo, and E. Sulistyawati. “Ecological Diversity of Soil Fauna As Ecosystem Engineers in Small-Holder Cocoa Plantation in South Konawe”. JOURNAL OF TROPICAL SOILS, vol. 17, no. 2, Nov. 2012, pp. 173-80, doi:10.5400/jts.2012.v17i2.173-180.