Edmunds, P. (2011). Developing skills for the TOEFL IBT: Intermediate, Writing. Thành phố Hồ Chí Minh: Trẻ.
Chicago ZitierstilEdmunds, Paul. Developing Skills for the TOEFL IBT: Intermediate, Writing. Thành phố Hồ Chí Minh: Trẻ, 2011.
MLA ZitierstilEdmunds, Paul. Developing Skills for the TOEFL IBT: Intermediate, Writing. Thành phố Hồ Chí Minh: Trẻ, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.