^Cornell, Vincent J. (2007) Voices of Islam: Voices of art, beauty, and science (volume 4 in the Voices of Islam series) Praeger, Westport, Connecticut, pages 94-95, ISBN978-0-275-98735-0
^Begde, Prabhakar V. (1978). Ancient and Mediaeval Town-planning in India (dalam bahasa English). Sagar Publications. hlm. 173.Pemeliharaan CS1: Bahasa yang tidak diketahui (link)