Neumann, D., M. L. J. Stiassny, and U. K. Schliewen. “Two New Sympatric Sarotherodon species (Pisces: Cichlidae) Endemic to Lake Ejagham, Cameroon, West-Central Africa, With Comments on the Sarotherodon galilaeus Species Complex”. Zootaxa, vol. 2765, no. 1, Feb. 2011, pp. 1–20, doi:10.11646/zootaxa.2765.1.1.