Ningsih, Anita Dewi Cahya, and Evi Apriliani. 2026. “Analisis Fluktuasi Harga Minyak Dunia Terhadap Biaya Operasional Dan Profitabilitas PT Blue Bird Tbk”. Indonesian Journal of Multidisciplinary on Social and Technology 4 (3):11632-41. https://doi.org/10.69693/ijmst.v4i3.14504.