http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Câu trực tiếp - Câu gián tiếp = English grammar exercises: Direct speech - Indirect speech
Giới thiệu một số bài tập ngữ pháp tiếng Anh về câu trực tiếp và câu gián tiếp