(美)Michael A. Putlack，(加)Stephen Poirier，(美)Tony Covello编著. (2017). 托福考试专项高分突破．口语．Speaking. 中国宇航出版社.
Chicago Style (17th ed.) Citation(美)Michael A. Putlack，(加)Stephen Poirier，(美)Tony Covello编著. 托福考试专项高分突破．口语．Speaking. 中国宇航出版社, 2017.
Cita MLA(美)Michael A. Putlack，(加)Stephen Poirier，(美)Tony Covello编著. 托福考试专项高分突破．口语．Speaking. 中国宇航出版社, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.