http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Những bài học đắt giá trong bán hàng
Nội dung gồm: Quy trình, kỹ năng, tâm lí bán hàng và những bài học bên lề và cách hoàn thiện bản thân