蘇萬納(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: 蘇萬納(Gschwandtner, Gerhard) (Language materials, printed) , [著]

頂尖人物：美國當代名人訪談錄 by: 修身; 韓應寧; 蘇萬納(Gschwandtner, Gerhard) (Language materials, printed) , [著]

聽頂尖業務說故事：一起分享成功銷售的真實經歷 by: 褚耐安; 蘇萬納(Gschwandtner, Gerhard) (Language materials, printed) , [著]

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: 蘇萬納(Gschwandtner, Gerhard); 劉復苓 (Language materials, printed) , [著]

口袋業務家教：25個隨身攜帶的銷售祕訣 by: 戴至中; 蘇萬納(Gschwandtner, Gerhard) (Language materials, printed) , [著]