王人國

顧客關係管理＝Customer relationship management by: 王人國 (Language materials, printed) , [編著]

顧客關係管理：快樂做好顧客滿意,提昇永續競爭力! (四版) = Customer relationship management by: 王人國 (Language materials, printed) , [編著]

顧客關係管理 = Customer relationship management by: 王人國 (Language materials, printed) , [編著]

顧客關係管理 = Customer relationship management by: 王人國 (Language materials, printed) , [編著]

銷售,成交!：銷售教練王人國帶你成交,業績長紅 by: 王人國 (Language materials, printed) , [著]