APA (7th ed.) Zitazioa

(2007). Baby Einstein. circles, squares and more!. Discovering shapes.

Chicago Style (17th ed.) Zitazioa

Baby Einstein. Circles, Squares and More!. Discovering Shapes. 2007.

MLA (9th ed.) Zitazioa

Baby Einstein. Circles, Squares and More!. Discovering Shapes. 2007.

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