Cita APA (7a ed.)

Sharp, B. (2009). Thirty-three ways to help with numeracy. Routledge.

Cita Chicago Style (17a ed.)

Sharp, Brian. Thirty-three Ways to Help with Numeracy. London ; New York: Routledge, 2009.

Cita MLA (9a ed.)

Sharp, Brian. Thirty-three Ways to Help with Numeracy. Routledge, 2009.