1. Acheampong, P. K., 1988, Water balance analysis for Ghana: Geography, v. 73, no. 2, p. 125–131.
2. Anon, 2000, Unpublished technical report, International Development Agency (IDA) funded 80 borehole drilling program, 150 pp.
3. Anon, 2001, Technical proposal for the rural water supply and sanitation in the Northern Region, Unpublished report for the Community Water and Sanitation Agency (CWSA), 84 pp.
4. Anon, 2002, Baseline study and inventory of water resources in the Northern Region of Ghana, AFD rural water supply and sanitation project in the Northern Region, 125 pp.
5. Anon, 2007, ABEM Instruction Manual for SAS 1000/4000 Terameter, ABEM Instrument ABS-17266 Sundbyberg, Sweden, 135 pp.