อ้างอิง ของ ปฏิทินโฮเรียกุ

  1. ↑ Renshaw, Steven L. and Saori Ihara. (2007). "Takahashi, Yoshitoki," Biographical Encyclopedia of Astronomers (Virginia Trimble, ed.), p. 1121.
  2. ↑ Nussbaum, Louis-Frédéric. (2005). "Calendar" in Japan Encyclopedia, p. 98.
  3. 1 2 Nussbaum, "Abe Yasukuni" at p. 4.
  4. ↑ Nussbaum, "Shibukawa Shunkai" at p. 850.
  5. ↑ Nussbaum, "Hōreki Kōjutsu Genreki" at p. 352.
  6. ↑ Nussbaum, "Kansei-reki" at p. 478; Orchiston, Wayne et al. (2011). Highlighting the History of Astronomy in the Asia-Pacific Region, p. 155.
  7. ↑ Orchiston, p. 155.