http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nội dung tài liệu trình bày các chủ đề và chủ điểm của ngữ pháp tiếng Anh theo tư duy logic qua các sơ đồ tư duy tóm tắt dễ nhớ và dễ hiểu.