Yuni K, K. C., Hidayat, N., & Musfiroh, A. (2025). Closed-Loop Sytem in Sarangan Magetan Dairy Farm: Designing a Business Model Canvas for Resource Optimization. Eqien - Jurnal Ekonomi Dan Bisnis, 14(2), 468–481. https://doi.org/10.34308/eqien.v14i2.1996