Cunningham S. Sarah & Moor P. Peter. (2005). Cutting Edge. Upper-intermediate: Teacher's Resource Book (8th ed.). Harlow, Longman, 2005.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCunningham S. Sarah और Moor P. Peter. Cutting Edge. Upper-intermediate: Teacher's Resource Book. 8th ed. Harlow, Longman, 2005, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCunningham S. Sarah और Moor P. Peter. Cutting Edge. Upper-intermediate: Teacher's Resource Book. 8th ed. Harlow, Longman, 2005, 2005.
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