http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nguyễn Duy Quý (biên soạn)...[et al.]
Triết học Mac-Lenin,Kinh tế Chính trị Mác - Lênin
Communism,Philosophy, Marxist,Socialism