William N. Goetzmann; K. Geert Rouwenhorst (1. 8. 2005). The Origins of Value: The Financial Innovations that Created Modern Capital Markets. Oxford University Press. стр. 94. ISBN978-0-19-517571-4. „The Mongols adopted the Jin and Song practice of issuing paper money, and the earliest European account of paper money is the detailed description given by Marco Polo, who claimed to have served at the court of the Yuan dynasty rulers.”CS1 одржавање: Формат датума (веза)