Bowler, B., & Bill Bowler; Sue Parminter. (2008). Happy Earth American english: Teacher's Book. Oxford,New York: Oxford University Press.
Stile di citazione ChicagoBowler, Bill, e Bill Bowler; Sue Parminter. Happy Earth American English: Teacher's Book. Oxford,New York: Oxford University Press, 2008.
Citazione MLABowler, Bill, e Bill Bowler; Sue Parminter. Happy Earth American English: Teacher's Book. Oxford,New York: Oxford University Press, 2008.
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