(2009). How to master skills for the TOEFL iBT speaking: Basic. Tp. Hồ Chí Minh: Tổng hợp.
Styl cytowania ChicagoHow to Master Skills for the TOEFL IBT Speaking: Basic. Tp. Hồ Chí Minh: Tổng hợp, 2009.
Styl cytowania MLAHow to Master Skills for the TOEFL IBT Speaking: Basic. Tp. Hồ Chí Minh: Tổng hợp, 2009.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..