APA aipamena

Bowler, B., & Bill Bowler; Sue Parminter. (2002). Happy Earth: Teacher's Book 1. Oxford,New York: Oxford University Press.

Chicago Style aipamena

Bowler, Bill, và Bill Bowler; Sue Parminter. Happy Earth: Teacher's Book 1. Oxford,New York: Oxford University Press, 2002.

MLA aipamena

Bowler, Bill, và Bill Bowler; Sue Parminter. Happy Earth: Teacher's Book 1. Oxford,New York: Oxford University Press, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.