http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Tinh hoa văn học dân gian người Việt
Nguyễn Xuân Kính ( chủ biên ), Vũ Quang Dũng, Phan Thị Hoa Lý