Path analysis: pengaruh produk, pelayanan, kepuasan terhadap loyalitas pelanggan pegadaian syariah Kusumanegara Yogyakarta (laporan penelitian pembinaan kapasitas pemula)
How to manage customer voice
Customer service : skills for success sixth edition
The Brandpromise :how Costco, Ketel One, Make-a-wish, Tourism Vancouver, and other leading brands make and keep the promise that guarantees success!
Take their breath away :how imaginative service creates devoted customers
Taming the search-and-switch customer :earning customer loyalty in a compulsion-to-compare world
The only thing that matters : bringing the power of customer into center of your business / Karl albrecht
Beans :four principles for running a business in good times or bad : a business fable taken from real life
The winner's attitude :change how you deal with difficult people and get the best out of any situation