葛史汪納 ((Gschwandtner, Gerhard))

看超級業務如何成功交易 : = 幫你簽下更多訂單的行銷妙招 / by: 葛史汪納 ((Gschwandtner, Gerhard)); 林宜萱; Gschwandtner, Gerhard (Language materials, printed)

業務拜訪現場直擊 : = 有效判讀客戶肢體訊息,具體提昇銷售業績 / by: 葛史汪納 ((Gschwandtner, Gerhard)); 劉復苓; Gschwandtner, Gerhard (Language materials, printed)