http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Trẻ; Công ty Văn hóa Sáng tạo Trí Việt
Marilyn J. Rymniak, Janet A. Shank; Nguyễn Văn Phước , Ban biên dịch First News (chú giải)
ĐTTS ghi: Chương trình luyện thi TOEFL