"Memoirs of Robert Dollar". Electric Scotland. Alirita en 2022-12-09. "The extreme north of the city is at the termination of the Grand Canal and the extreme south is on the Tsien Tang River, sometimes called the Hangchow River, which is about one and a quarter miles wide at this point."
Goodchild, Thomas (1911). "Northeastern Chehkiang, China: Notes on Human Adaptation to Environment".Bulletin of the American Geographical Society. 43 (11): 801–826. doi:10.2307/200020. ISSN 0190-5929. JSTOR 200020. "Dzien-dang, or Hangchow River, and is one of the commonest trees to be found there."
