Sumber
1. Louvre, Paris, France
2. National Museum of China, Beijing
3. National Museum of Natural History, Washington, US
4. National air and space Museum, Washington, US
5. British Museum, London
6. National Gallery, London
7. Metropolitan Museum of art, New York,, US
8. Vatican Museum, Vatican City
9. Tate Modern, London
10. National Palace Museum, Taiwan
