http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
151 ý tưởng chinh phục khách hàng thành công
Jellt R. Wilson; Nguyễn Thanh Nhàn (dịch)
Tên sách tiếng Anh: 151 quick ideas to get new customers