http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bộ đề thi trắc nghiệm luyện thi Trung học phổ thông quốc gia năm 2019 môn Toán
Phạm Đức Tài (ch.b); Nguyễn Ngọc Hải, Lại Tiến Minh