Zulaicha, Ratni. " PENGARUH CUSTOMIZATION BASIC MARKET ORIENTATION DAN COMPETITIVE BENCHMARKING TERHADAP CUSTOMER RETENTION USAHA KECIL KNALPOT DI PURBALINGGA." Performance: Jurnal Personalia, Financial, Operasional, Marketing dan Sistem Informasi [Online], 13.1 (2011): 87-102. Web. 11 May. 2025