Cita APA

Bowler, B., & Bill Bowler; Sue Parminter. (2003). Happy Earth: Activity book. Oxford,New York: Oxford University Press.

Chicago Style Citation

Bowler, Bill, i Bill Bowler; Sue Parminter. Happy Earth: Activity Book. Oxford,New York: Oxford University Press, 2003.

Cita MLA

Bowler, Bill, i Bill Bowler; Sue Parminter. Happy Earth: Activity Book. Oxford,New York: Oxford University Press, 2003.