THE INFLUENCE OF PRICE PERCEPTIONS, SOCIAL MEDIA MARKETING, AND SERVICE QUALITY ON CONSUMER PURCHASE INTEREST (PENERBIT DAN TOKO BUKU ZANAFA PEKANBARU) By: Nurul Oktaviani Email : [email protected] Supervisor : Mashur Fadli, S.E., M.Si. Business Administration Study Program, Department of Administration Scienes Faculty of Social Science and Political Science, Riau Univ…