Alexander, L. (1998). New Concept English Developing Skills: Supplementary Written Exercises. Kanisius.
استشهاد بنمط شيكاغوAlexander, L.G. New Concept English Developing Skills: Supplementary Written Exercises. Kanisius, 1998.
MLA استشهادAlexander, L.G. New Concept English Developing Skills: Supplementary Written Exercises. Kanisius, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.