Chinese Coinage Web Site (Charm.ru) - K'ang Hsi Coin Charm (页面存档备份,存于互联网档案馆) by Vladimir Belyaev, Y.K. Leung, and John O. Dell. Retrieved: 22 September 2018.
Chinese Coinage Web Site (Charm.ru) - K'ang Hsi Coin Charm (页面存档备份,存于互联网档案馆) by Vladimir Belyaev, Y.K. Leung, and John O. Dell. Retrieved: 22 September 2018.