FRANK EDUCATION AIDS. (2013). LEARNIG MATHS THE FUN WAY- 6. FRANK EDUCATION AIDS.
Čikaški stil citiranja (17. izdanje)FRANK EDUCATION AIDS. LEARNIG MATHS THE FUN WAY- 6. FRANK EDUCATION AIDS, 2013.
MLA način citiranja (9. izdanje)FRANK EDUCATION AIDS. LEARNIG MATHS THE FUN WAY- 6. FRANK EDUCATION AIDS, 2013.
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