Heyndrickx, Jeroom J. “A Copy of the Celestial Globe of Ferdinand Verbiest SJ at Leuven University (Belgium): As Symbol of Friendship and Exchange Between China and Europe”. The Journal of the Macau Ricci Institute 12 (October 1, 2023): 22–29. Accessed January 22, 2025. https://journals.usj.edu.mo/index.php/mrijournal/article/view/195.