Tilbury, A., & Alex Tilbury; Leslie Anne Hendra; Sarah Ackroyd. (2011). English unlimited. B2, Upper intermediate Teacher's Pack. Cambridge: Cambridge University Press.
استشهاد بنمط شيكاغوTilbury, Alex, و Alex Tilbury; Leslie Anne Hendra; Sarah Ackroyd. English Unlimited. B2, Upper Intermediate Teacher's Pack. Cambridge: Cambridge University Press, 2011.
MLA استشهادTilbury, Alex, و Alex Tilbury; Leslie Anne Hendra; Sarah Ackroyd. English Unlimited. B2, Upper Intermediate Teacher's Pack. Cambridge: Cambridge University Press, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.