http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Giới thiệu 12 tuyệt kĩ trong bán hàng: tâm lí học trong bán hàng, kế hoạch bán hàng cá nhân, tìm kiếm, tạo dựng quan hệ, tư vấn, xác định chính xác nhu cầu, gây ảnh hưởng lên hành vi của khách hàng...
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