Gallagher, N. (2004). Delta's key to the TOEFL test. Tp. Hồ Chí Minh: Trẻ.
Trích dẫn kiểu ChicagoGallagher, Nancy. Delta's Key to the TOEFL Test. Tp. Hồ Chí Minh: Trẻ, 2004.
ציטוט MLAGallagher, Nancy. Delta's Key to the TOEFL Test. Tp. Hồ Chí Minh: Trẻ, 2004.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.