Noviawan, Rachmat, Ismiyah, Elly, AND Fathoni, M.. " MARKETING STRATEGY ANALYSIS OF LEATHER CRAFT PRODUCTS IN UD. IRWAN JAYA IN THE TIME OF COVID-19 WITH SWOT METHODS and QSPM" Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC) [Online], Volume 1 Number 2 (23 December 2021)