http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Trần Ngọc Phác, Trần Thị Kim Thu (đồng chủ biên)
ĐTTS ghi: Trường Đại học kinh tế quốc dân. Khoa thống kê