Murphy, R., & Châu Thị Hoàng Yến. (2006). Essential grammar in use: A self-study reference and practice book for elementary students of English with answers (Second edition.). Hà Nội: Thanh Niên.
Trích dẫn kiểu ChicagoMurphy, Raymond., và Châu Thị Hoàng Yến. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English With Answers. Second edition. Hà Nội: Thanh Niên, 2006.
ציטוט MLAMurphy, Raymond., và Châu Thị Hoàng Yến. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English With Answers. Second edition. Hà Nội: Thanh Niên, 2006.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.