1. Graham, M., “A Report on the Fishing Survey of Lake Victoria 1927–28” (Crown Agents for the Colonies, London, 1929).
2. Worthington, E. B., “A Report on the Fishing Survey of Lakes Albert and Kioga” (Crown Agents for the Colonies, London, 1929). “A Report on the Fisheries of Uganda” (Crown Agents for the Colonies, London, 1932). Ricardo Bertram, C. K., Borley, H. J. H., and Trewavas, E., “Report on the Fish and Fisheries of Lake Nyasa” (Crown Agents for the Colonies, London, 1942). Lowe, R. H., “Report on the Tilapia and other Fish and Fisheries of Lake Nyasa, 1945–47” (H.M.S.O., London, 1952).