Cita APA (7th ed.)

Great Britain. Office for Standards in Education. (1993). The teaching and learning of number in primary schools: National Curriculum mathematics. HMSO.

Cita Chicago (17th ed.)

Great Britain. Office for Standards in Education. The Teaching and Learning of Number in Primary Schools: National Curriculum Mathematics. London: HMSO, 1993.

Cita MLA (9th ed.)

Great Britain. Office for Standards in Education. The Teaching and Learning of Number in Primary Schools: National Curriculum Mathematics. HMSO, 1993.