APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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

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