Ika Purnamasari, Nurkholifah Dwi Rahayu, M. Khairul Anam, and Dona Wahyuning Laily, “Analysis of Profitability and Profit Margins of Rice-Fish Farming (Integrated Rice-Fish System) in Karangbinangun District, Lamongan Regency, East Java”, Grouper, vol. 15, no. 1, pp. 106–116, Apr. 2024.