APA aipamena

Laura Marsh. (2012). National Geographic Readers: Caterpillar to Butterfly (4/25/12.). National Geographic Children's Books.

Chicago Style aipamena

Laura Marsh. National Geographic Readers: Caterpillar to Butterfly. 4/25/12. National Geographic Children's Books, 2012.

MLA aipamena

Laura Marsh. National Geographic Readers: Caterpillar to Butterfly. 4/25/12. National Geographic Children's Books, 2012.

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