<a href="https://gallica.bnf.fr/accueil/en/content/accueil-en?mode=desktop" target="_blank" rel="noreferrer noopener">BnF Gallica</a>
<a href="https://www.youtube.com/watch?v=uIeX_XS6KHk&feature=youtu.be" target="_blank" rel="noreferrer noopener">What is Gallica</a>
<a href="http://heron-net.be/pa_cct/index.php/About/Index" target="_blank" rel="noreferrer noopener">Chinese Christian Texts Database</a>
Bibliographic information collected by Ad Dudink and Nicolas Standaert (KU Leuven)
<a href="http://mingchingdatabase.blogspot.com/">"明末清初学术思想史再探"计划资料库</a>
Categorized references regarding the Late Ming Early Qing intellectual history