1.
Widyastuti M. Strategi Diferensiasi: Mencapai Keunggulan Kompetitif yang Sustainable. BIPs [Internet]. 2011Jul.29 [cited 2024Dec.12];3(2):Hal 109 - 120. Available from: https://jurnal.ukdc.ac.id/index.php/BIP/article/view/287