India in Practice: Society, Region, and Identity in Medieval Andhra. Oxford University Press. 2001: 273 [2019-07-14]. ISBN 978-0-19513-661-6. (原始内容存档于2019-03-30)
forest, in Chittoor District of Andhra Pradesh, India. Vernonia cinerea in Talakona forest, in Chittoor District of Andhra Pradesh, India. Vernonia cinerea