Ningrum, P. P. A.; Apriani, N.; Sidik, M.; Iskandar, S.; Murtado, A.; Muchsiri, M.; Syahputra , N.; Sari, M. P. Simple Bookkeeping and Determination of Cost of Goods Sold in the PKK Catfish Processing Group in Plaju Darat Village, Palembang City. Altifani 2026, 6, 115-121.