Cita APA (7th ed.)

Mason, J. (1988). Actions into words. Centre for Mathematics Education, Open University.

Cita Chicago (17th ed.)

Mason, John. Actions into Words. Milton Keynes [England]: Centre for Mathematics Education, Open University, 1988.

Cita MLA (8th ed.)

Mason, John. Actions into Words. Centre for Mathematics Education, Open University, 1988.