ALIMAH NUR; ATIK LUSIA. Pengaruh Strategi Marketing Mix (4P) Dalam Upaya Meningkatkan Kinerja Pemasaran Pada Masa Pandemi Covid-19 (Studi Kasus Pada Geffa Production Sukoharjo): Effect Of Marketing Mix Strategy (4P) In An Effort To Improve Marketing Performance During The Covid-19 Pandemic (Case Study On Geffa Production Sukoharjo). Jurnal Sinar Manajemen, [S. l.], v. 10, n. 2, p. 102–115, 2023. DOI: 10.56338/jsm.v11i2.2821. Disponível em: https://jurnal.unismuhpalu.ac.id/index.php/JSM/article/view/2821. Acesso em: 21 sep. 2026.