APA (7th ed.) Zitazioa

(1970). Square is a shape: A book about shapes / by Sharon Lerner.

Chicago Style (17th ed.) Zitazioa

Square Is a Shape: A Book About Shapes / by Sharon Lerner. 1970.

MLA (9th ed.) Zitazioa

Square Is a Shape: A Book About Shapes / by Sharon Lerner. 1970.

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