Bowler, B., & Bill Bowler; Sue Parminter. (2008). Happy Earth American english: Teacher's Book. Oxford,New York: Oxford University Press.
Trích dẫn kiểu ChicagoBowler, Bill, và Bill Bowler; Sue Parminter. Happy Earth American English: Teacher's Book. Oxford,New York: Oxford University Press, 2008.
MLA引文Bowler, Bill, và Bill Bowler; Sue Parminter. Happy Earth American English: Teacher's Book. Oxford,New York: Oxford University Press, 2008.
警告:这些引文格式不一定是100%准确.