"FAQsDiarkibkan 2011-04-11 di Wayback Machine." Hachette Book Group. Retrieved on April 17, 2011. "Hachette Book Group
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"FAQsDiarkibkan 2011-04-11 di Wayback Machine." Hachette Book Group. Retrieved on April 17, 2011. "Hachette Book Group
Marketing Department 237 Park Avenue New York, NY 10017"