Sonneveld, B.G.J.S. and Dent, D.L. (2009) How Good Is GLASOD? Journal of Environmental Management, 90, 274-283. http://dx.doi.org/10.1016/j.jenvman.2007.09.008
 Ndomba, P.M., Mtalo, F. and Killingtveit, A. (2007) A Proposed Approach of Sediment Sources and Erosion Processes Identification at Large Catchments. Journal of Urban and Environmental Engineering, 1, 79-86. http://dx.doi.org/10.4090/juee.2007.v1n2.079086
 Oldeman, L.R., Hakkeling, R.A. and Sombroek, W.G. (1991) Global Assessment of Soil Degradation (GLASOD): World Map of the Status of Human-Induced Soil Degradation. United Nations Environment Programme, International Soil Reference and Information Centre, Nairobi.
 Peart, M.R. and Walling, D.E. (1988) Techniques for Establishing Suspended Sediment Sources in Two Drainage Basins in Devon, UK: A Comparative Assessment. Sediment Budgets, Proceedings of the Porto Alegre Symposium, December 1988, IAHS Publ. No. 174, 269-279.
 Minella, J. P. G., Merten, G. H., and Clarke, R.T. (2004) Identification of Sediment Sources in a Small Rural Drainage Basin. Sediment Transfer through the Fluvial System, Proceedings of a Symposium held in Moscow, August 2004, IAHS Publ. 288, 44-51.
 Yanda, P. Z. (1995) Temporal and Spatial Variations of Soil Degradation in Mwisanga Catchment, Kondoa, Tanzania. PhD Dissertation Series No. 4, Department of Physical Geography, Stockholm University, Stockholm, 136.
 Williams, G.P. (1989) Sediment Concentrations versus Water Discharge during Single Hydrologic Events in Rivers. Journal of Hydrology, 111, 89-106. http://dx.doi.org/10.1016/0022-1694(89)90254-0
 Ndomba, P.M. (2007) Modelling of Erosion Processes and Reservoir Sedimentation Upstream of Nyumba Ya Mungu Reservoir in the Pangani River Basin. PhD Thesis in Water Resources Engineering, University of Dar es Salaam, Dar es Salaam.
 Ndomba, P.M. (2013) Validation of PSIAC Model for Sediment Yields Estimation in Ungauged Catchments of Tanzania. International Journal of Geosciences, 4, 1101-1115.
 Molina, A. (2009) A Report on Soil Erosion Processes in the Nile Basin. Consultancy within the Framework of the Nile/FRIEND Project Supported by United Nations Educational, Scientific and Cultural Organization (UNESCO).
 ISRIC, The International Soil Reference and Information Centre (2014) Global Assessment of Human-Induced Soil Degradation. ISRIC-World Soil Information.
 StatSoft, Inc. (2014) Electronic Statistics Textbook (Electronic Version). StatSoft, Tulsa.
 Arnold, J.G., Williams, J.R. and Maidment, D.R. (1995) Continuous-Time Water and Sediment-Routing Model for Large Basins. Journal of Hydrology Engineering, 121, 171-183.
 Wischmeier, W.H. and Smith, D.D. (1965) Predicting Rainfall-Erosion Losses from Cropland East of the Rocky Mountains, Agriculture Handbook, 282. US Department of Agriculture, Agriculture Research Service, Washington DC.
 Williams, J.R. (1975) Sediment-Yield Prediction with Universal Equation Using Runoff Energy Factor. In: Present and Prospective Technology for Predicting Sediment Yield and Sources, US Department of Agriculture, Agriculture Research Service, Washington DC, 244-252.
 Bagnold, R.A. (1977) Bed Load Transport in Natural Rivers. Water Resources Research, 13, 303-312. http://dx.doi.org/10.1029/WR013i002p00303
 Pacific Southwest Inter Agency Committee (PSIAC) (1968) Factors Affecting Sediment Yield in the Pacific Southwest Area and Selection and Evaluation of Measures for Reduction of Erosion and Sediment Yield. Water Management Subcommitte on American Society of Civil Engineers (ASCE), Report No. HY 12.
 Santhi, C.G., Arnold, J.R., Dugas, W.A., Srinivasan, R. and Hauck, L.M. (2001) Validation of the SWAT Model on a Large River Basin with Point and Nonpoint Sources. Journal of America Water Resources Association, 37, 1169-1188. http://dx.doi.org/10.1111/j.1752-1688.2001.tb03630.x