APA-viite (7. p.)
Texas Instruments. Math Talk: The Keys to Speak and Math Fun. Texas Instruments.
Chicago-viite (17. p.)
Texas Instruments. Math Talk: The Keys to Speak and Math Fun. Dallas, EUA: Texas Instruments.
MLA-viite (9. p.)
Texas Instruments. Math Talk: The Keys to Speak and Math Fun. Texas Instruments.
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