^Ad Dudink, “Xu Guangqi's Career: An Annotated Chronology” in Catherine Jami, Peter Engelfriet, & Gregory Blue, editors, Statecraft and Intellectual Renewal in Late Ming China: The Cross Cultural Synthesis of Xu Guangqi (1562–1633) (Leiden: Brill, 2001), 399.
^Ad Dudink, “Xu Guangqi's Career: An Annotated Chronology” in Catherine Jami, Peter Engelfriet, & Gregory Blue, editors, Statecraft and Intellectual Renewal in Late Ming China: The Cross Cultural Synthesis of Xu Guangqi (1562–1633) (Leiden: Brill, 2001), 409.
^ abLiam Matthew Brockey, Journey to the East: The Jesuit Mission to China, 1579–1724 (Cambridge: The Belknap Press of Harvard University Press, 2008), 59.
^ abAd Dudink, “Xu Guangqi's Career: An Annotated Chronology” in Catherine Jami, Peter Engelfriet, & Gregory Blue, editors, Statecraft and Intellectual Renewal in Late Ming China: The Cross Cultural Synthesis of Xu Guangqi (1562–1633) (Leiden: Brill, 2001), 400.
^Timothy Brook mengklaim bahwa nama ayah Xu adalah 'Xu Sicheng' (徐思誠), but provides no sources. Timothy Brook, “Xu Guangqi in His Context: The World of the Shanghai Gentry” in Catherine Jami, Peter Engelfriet, & Gregory Blue, editors, Statecraft and Intellectual Renewal in Late Ming China: The Cross Cultural Synthesis of Xu Guangqi (1562–1633) (Leiden: Brill, 2001), 93.
^Liam Matthew Brockey, Journey to the East: The Jesuit Mission to China, 1579–1724 (Cambridge: The Belknap Press of Harvard University Press, 2008), 140.
^ abLiam Matthew Brockney, Journey to the East: The Jesuit Mission to China, 1579–1724 (cambridge: The Belknap press of Harvard University Press , 2008),140.
Needham, Joseph (1959). Science and Civilisation in China: Volume 3, Mathematics and the Sciences of the Heavens and the Earth. Cambridge: Cambridge University Press; reprinted: Taipei: Caves Books, 1986. OCLC
Needham, Joseph (1984). Francesa Bray. Science and Civilisation in China: Volume 6, Biology and Biological Technology, Part 2: Agriculture. Cambridge: Cambridge University Press; reprinted: Taipei: Caves Books, 1986.