Tham khảo Mở_rộng_về_phía_nam_của_nhà_Hán

  1. ↑ Marks, Robert B. (2011). China: An Environmental History. Rowman & Littlefield Publishers. tr. 127. ISBN 978-1442212756.
  2. ↑ Marks, Robert B. (2011). China: An Environmental History. Rowman & Littlefield Publishers. tr. 146. ISBN 978-1442212756.
  3. ↑ Marks, Robert B. (2011). China: An Environmental History. Rowman & Littlefield Publishers. tr. 127. ISBN 978-1442212756.
  4. ↑ Marks, Robert B. (2011). China: An Environmental History. Rowman & Littlefield Publishers. tr. 146. ISBN 978-1442212756.
  5. 1 2 3 Holcombe 2001, tr. 147.
  6. ↑ Gernet 1996, tr. 126.
  7. ↑ Yu 1986, tr. 455.
  8. 1 2 Holcombe 2001, tr. 149.
  9. ↑ Yu 1986, tr. 451-452.
  10. 1 2 Yu 1986, tr. 452.