http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Phương pháp dạy và học toán ở tiểu học
Tài liệu đào tạo giáo viên tiểu học hệ THSP 9+3 và 9+4. Lưu hành nội bộ
ĐTTS ghi : Bộ GD & ĐT. Vụ giáo viên