[1] File:CADAL02035259 宋遼金元四史朔閏攷.djvu - Wikimedia Commons (, ) https://commons.wikimedia.org/wiki/File:CADAL02035259_%E5%AE%8B%E9%81%BC%E9%87%91%E5%85%83%E5%9B%9B%E5%8F%B2%E6%9C%94%E9%96%8F%E6%94%B7.djvu
[2] File:叢書集成新編043.pdf - Wikimedia Commons, , https://commons.wikimedia.org/w/index.php?title=File:%E5%8F%A2%E6%9B%B8%E9%9B%86%E6%88%90%E6%96%B0%E7%B7%A8043.pdf&page=134