APA citiranje

Bowler, B., & Bill Bowler; Sue Parminter. (2008). Happy Earth American english: Teacher's Book. Oxford,New York: Oxford University Press.

Trích dẫn kiểu Chicago

Bowler, Bill, và Bill Bowler; Sue Parminter. Happy Earth American English: Teacher's Book. Oxford,New York: Oxford University Press, 2008.

MLA citiranje

Bowler, Bill, và Bill Bowler; Sue Parminter. Happy Earth American English: Teacher's Book. Oxford,New York: Oxford University Press, 2008.