Jones, L. (2002). New progress to proficiency: Self-study student's book. Cambridge: Canbridge University.
استشهاد بنمط شيكاغوJones, Leo. New Progress to Proficiency: Self-study Student's Book. Cambridge: Canbridge University, 2002.
MLA استشهادJones, Leo. New Progress to Proficiency: Self-study Student's Book. Cambridge: Canbridge University, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.