Valensia, Valensia, and Fernando Mulia. 2021. “ANALISIS TINGKAT EFISIENSI RELATIF TIGA CABANG TOKO HANDPHONE CV X DI BANDUNG MENGGUNAKAN METODE DATA ENVELOPMENT ANALYSIS”. MANNERS (Management and Entrepreneurship Journal) 4 (1):43-48. https://doi.org/10.56244/manners.v4i1.385.