5 1 10 Cara jitu memikat hati pelanggan Martin, William B. Primary Author mixed material 9794421561 Jakarta PPm 2005 Mapitupulu, Paimin Primary Author mixed material 9794140252 Bandung Alumni 2007 panduan lengkap untuk meraih kesetian pelanggan Raphel, Muraih: Raphel, Neil: Raye, Janis S. Primary Author mixed material 9789792227581 Jakarta Gramedia 2007 Cara mencapai custemer focus Cook, Sarah Primary Author mixed material 9794421677 Jakarta PPm 2004 Tetap efektif dalam kondisi kesal Morgan, Rebecca L. Primary Author mixed material 9794421111 Jakarta PPm 2003