Houghton Mifflin Company. (2002). Houghton Mifflin mathematics. Houghton Mifflin.
Čikaški stil citiranja (17. izdanje)Houghton Mifflin Company. Houghton Mifflin Mathematics. Boston: Houghton Mifflin, 2002.
MLA način citiranja (8. izdanje)Houghton Mifflin Company. Houghton Mifflin Mathematics. Houghton Mifflin, 2002.
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