http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Lược khảo lịch sử tư tưởng xã hội chủ nghĩa và cộng sản chủ nghĩa
In lần thứ 2, có sửa chữa, bổ sung
Đỗ Tư, Trịnh Quốc Tuấn, Nguyễn Đức Bách