Cita APA (7th ed.)

Hughes, M. (1986). Children and number: Difficulties in learning mathematics. B. Blackwell.

Cita Chicago (17th ed.)

Hughes, Martin. Children and Number: Difficulties in Learning Mathematics. Oxford: B. Blackwell, 1986.

Cita MLA (9th ed.)

Hughes, Martin. Children and Number: Difficulties in Learning Mathematics. B. Blackwell, 1986.