http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Các bài học hiệu quả để thay đổi bản thân = The 7 habits of highly effective people: Powerfull lessons in personal change
Nhà xuất bản Thành phố Hồ Chí Minh
Stephen R. Covey; Lưu Văn Hy biên dịch