Coba jelasin Publikasi dari Sabatino de Ursis dong

Sabatino de Ursis dan Xu Guangqi (1612) 泰西水法 (Thai Hsi Shui Fa)

Catherine Jami, Peter Engelfriet, Gregory Blue (2001) Statecraft and Intellectual Renewal in Late Ming China. The cross-cultural synthesis of Xu Guangqi (1562–1633), p. 209, BRILL, ISBN 90-04-12058-0