APA (7th ed.) Citation

Haylock, D., & Cockburn, A. D. (1997). Understanding mathematics in the lower primary years (Rev. and expanded ed.). Chapman.

Chicago Style (17th ed.) Citation

Haylock, Derek, and Anne D. Cockburn. Understanding Mathematics in the Lower Primary Years. Rev. and expanded ed. London: Chapman, 1997.

MLA (9th ed.) Citation

Haylock, Derek, and Anne D. Cockburn. Understanding Mathematics in the Lower Primary Years. Rev. and expanded ed. Chapman, 1997.