http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Các vấn đề xung quanh phương trình bậc 2 và tam thức bậc 2
Luận văn tốt nghiệp Đại học Sư phạm ngành Toán Khóa 16
Trường Đại học Cần Thơ, Khoa Sư phạm, Bộ môn Toán
mathematics - study and teaching ( secondary )