Beaumont, J. (2006). NorthStar: units 7 - 10 CD2: Building skills for the TOEFL iBT - Intermediate. White Plains, NY: Pearson Longman in cooperationwith ETS.
استشهاد بنمط شيكاغوBeaumont, John. NorthStar: Units 7 - 10 CD2: Building Skills for the TOEFL IBT - Intermediate. White Plains, NY: Pearson Longman in cooperationwith ETS, 2006.
MLA استشهادBeaumont, John. NorthStar: Units 7 - 10 CD2: Building Skills for the TOEFL IBT - Intermediate. White Plains, NY: Pearson Longman in cooperationwith ETS, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.