http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Lao động xã hội;Công ty cổ phần sách Alpha
Jack Canfield, Mark Victor Hasen, Les Hewitt; Vũ Nghệ Linh, Trần Vân Anh (dịch)