LÜKS MODA MARKALARININ SOSYAL MEDYA KULLANIMI: Y KUŞAĞININ ALGISI ÜZERİNE BİR ARAŞTIRMA (THE USE OF SOCIAL MEDIA BY LUXURY FASHION BRANDS: A STUDY ON THE PERCEPTION OF A GENERATION Y.) - E. Merve BİÇER YUMAK - | The Journal of Academic Social Science