“MANAGERIAL ACCOUNTING AND COST CONCEPTS: A THEORETICAL REVIEW AND ITS APPLICATION IN COST MANAGEMENT OF FOOD AND BEVERAGE MSMEs IN MEDAN CITY (A CASE STUDY OF KEDAI KOPI KAWAN)”. 2026. Musytari : Jurnal Manajemen, Akuntansi, Dan Ekonomi 25 (11). https://doi.cibangsa.org/DOI-2026-627.