Cita APA (7a ed.)

Haylock, D., & Cockburn, A. (2003). Understanding mathematics in the lower primary years: A guide for teachers of children 3-8 (2nd ed.). Paul Chapman Publishing.

Cita Chicago Style (17a ed.)

Haylock, Derek, y Anne Cockburn. Understanding Mathematics in the Lower Primary Years: A Guide for Teachers of Children 3-8. 2nd ed. London: Paul Chapman Publishing, 2003.

Cita MLA (9a ed.)

Haylock, Derek, y Anne Cockburn. Understanding Mathematics in the Lower Primary Years: A Guide for Teachers of Children 3-8. 2nd ed. Paul Chapman Publishing, 2003.