British Hit Singles & Albums (Edition 17), published by Guinness World Records "Top 50 Global Best Selling Albums for 2003 (physical and digital album formats included)" (PDF).
Truy cập ngày 4 tháng 4 năm 2010.  ^ British Hit Singles & Albums (Edition 17), published by Guinness World Records ^ “Top 50 Global Best Selling Albums for 2003 (physical and digital album formats included)” (PDF).