葛史汪納 ((Gschwandtner, Gerhard))

聽頂尖業務說故事 : = 一起分享成功銷售的真實經歷 / by: 葛史汪納 ((Gschwandtner, Gerhard)); 褚耐安; Gschwandtner, Gerhard (Language materials, printed)

頂尖人物美國當代名人訪談錄 / by: 葛史汪納 ((Gschwandtner, Gerhard)); 韓應寧 (Language materials, printed)

口袋業務家教 : = 25個隨身攜帶的銷售祕訣 / by: 葛史汪納 ((Gschwandtner, Gerhard)); 戴至中; Gschwandtner, Gerhard (Language materials, printed)