T. A. H. A. L. Consulting Ltd. y Engineering Science, Inc. -Pasadena, CA, US,
«Design phase of the water supply and sewerage scheme, Accra-Tema metropolitan area, Ghana : Weija new dam for municipal water supply and irrigation». United Nations Special Fund, New York, NY, USA, p. 38 pp. : 16 tab., 13 fig., 1968.
T. A. H. A. L. Consulting Ltd. y Engineering Science, Inc. -Pasadena, CA, US,
«Design phase of the water supply and sewerage scheme, Accra-Tema metropolitan area, Ghana : Weija new dam for municipal water supply and irrigation : addendum». United Nations Special Fund, New York, NY, USA, p. 18 pp.: fig. tab. 4 ref., 1968.