Bowler, B., & Bill Bowler; Sue Parminter. (2007). Happy World American English: Teacher's Book. Oxford: Oxford University Press.
Chicago Style CitationBowler, Bill, i Bill Bowler; Sue Parminter. Happy World American English: Teacher's Book. Oxford: Oxford University Press, 2007.
Cita MLABowler, Bill, i Bill Bowler; Sue Parminter. Happy World American English: Teacher's Book. Oxford: Oxford University Press, 2007.
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