Erlinda, C., Putra Panji Respati and Aries Kurniawan (2025) “Optimizing the Partnership System as an Effort to Increase Sales at Ramli”, Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC), 2(2). doi: 10.30587/umgeshic.v2i2.10790.