IRC International Water and Sanitation Centre, The Hague, NL, Pan African Institute for Development - Buea, CM, PAID, y Water and Sanitation Management Consultants -Buea, CM, WSMC,
«Water management with a difference». Water and Sanitation Management Consultants (WSMC), Buea, Cameroon, p. video (25 min.) : VHS/PAL, 2000.
