Lewis, Digby. 1980. "A further examination of the taxonomic status of Labidochromis joanjohnsonae Johnson 1974 with a redescription of the species". Revue de Zoologie et Botanique Africaines. 94:959-971 (crc01902) (Kurzfassung)
Lewis, Digby. 1980. "The nest pattern of Lethrinops aurita Regan, a cichlid fish from Lake Malawi". Luso. Journal of Science and Technology Malawi. 1(1):36-37 (crc05270)
Lewis, Digby. 1981. "Preliminary comparisons between the ecology of the haplochromine cichlid fishes of Lake Victoria and Lake Malawi". Netherlands Journal of Zoology. 31(4):746-761 (crc01750) (Kurzfassung)
Lewis, Digby. 1982. "A Revision of the Genus Labidochromis (Teleostei: Cichlidae) from Lake Malawi". Zoological Journal of the Linnean Society. 189-265 (crc00119)
Lewis, Digby & P. Reinthal, J. Trendall. 1986. "A guide to the fishes of Lake Malawi National Park". World Wildlife Fund (crc01717)