PENGARUH MUSIM PENGHUJAN TERHADAP OMSET USAHA LAUNDRY ZAM ZAM DI JL. SUTOMO UJUNG, MEDAN TIMUR. Musytari. 2025;25(1):681-690. Accessed October 3, 2026. https://cibjournal.com/index.php/musytari/article/view/2892