Magnetic Service 7 rahasia menciptakan pelanggan setia BELL, Chip R Bell, Bilijack R Lastiati, Anies text Bandung Kaifa 2004 ind Judul asli : Magnetic service : Screts for creeting passionately devoted customs Bibliografi : hlm. 305-308 Indeks Manajemen URN:ISBN:979-3659-16-5