Mokoginta, I., F. Hapsyari, and M. A. Suprayudi. “The Improvement of Protein Retention through a Higher Utilization of Carbohydrate in the Diet With Chromium for Common Carp Cyprinus Carpio Linn.”. Jurnal Akuakultur Indonesia, Vol. 3, no. 2, Aug. 2007, pp. 37-41, doi:10.19027/jai.3.37-41.