APA-viite (7. p.)
Association of teachers of mathematics. (1964). Some lessons in mathematics (1a. ed.). Fletcher, T. J..
Chicago-viite (17. p.)
Association of teachers of mathematics. Some Lessons in Mathematics. 1a. ed. Cambridge: Fletcher, T. J., 1964.
MLA-viite (9. p.)
Association of teachers of mathematics. Some Lessons in Mathematics. 1a. ed. Fletcher, T. J., 1964.
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