CHILDCRAFT: SHAPES AND NUMBERS. World Book.
Chicago Style (17. basım) AtıfCHILDCRAFT: SHAPES AND NUMBERS. World Book.
MLA (9th ed.) AtıfCHILDCRAFT: SHAPES AND NUMBERS. World Book.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
CHILDCRAFT: SHAPES AND NUMBERS. World Book.
Chicago Style (17. basım) AtıfCHILDCRAFT: SHAPES AND NUMBERS. World Book.
MLA (9th ed.) AtıfCHILDCRAFT: SHAPES AND NUMBERS. World Book.