http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
How to master skills for the TOEFL IBT actual test
Tổng hợp T.P. Hồ Chí Minh; Công ty TNHH Nhân Trí Việt
Michael A. Putlack, Will Link, Stephen Poirier
Kho giáo trình KGT.0050726, KGT.0050734