http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Lịch sử Việt Nam (từ thế kỉ X - 1858)
Giáo trình đào tạo giáo viên THCS hệ CĐSP
Trương Hữu Quýnh; Bùi Qúy Lộ, Đào Tố Uyên