APA (7th ed.) Citation

Julie Bolter, Bullock, S., & Susan Timperley. (2010). Mathematics: Extension 9. Cambridge University Press.

Chicago Style (17th ed.) Citation

Julie Bolter, Simon Bullock, and Susan Timperley. Mathematics: Extension 9. Cambridge University Press, 2010.

MLA (9th ed.) Citation

Julie Bolter, et al. Mathematics: Extension 9. Cambridge University Press, 2010.