Petrie, Cameron, (2013). "Taxila", in D. K. Chakrabarti and M. Lal (eds.), History of Ancient India III: The Texts, and Political History and Administration till c. 200 BC, Vivekananda International Foundation, Aryan Books International, Delhi, p. 656.
Petrie, Cameron, (2013). "Taxila", in D. K. Chakrabarti and M. Lal (eds.), History of Ancient India III: The Texts, and Political History and Administration till c. 200 BC, Vivekananda International Foundation, Aryan Books International, Delhi, p. 656 - 657.
Marshall, Taxila, Volume II 1951, p. 854: "The silver coins were a Persian siglos, tetradrachms of Alexander the Great and of Philip III Aridaeus, thirty-three silver bars with wheel symbols." Marshall, John (1951). Taxila, Volume II: Minor Antiquities. Cambridge University Press.
Bopearachchi & Cribb, Coins illustrating the History of the Crossroads of Asia 1992, pp. 57–59: About the hoard in Kabul: "In the same hoard there were also discovered two series of local silver coins which appear to be the product of local Achaemenid administration. One series (...) was made in a new way, which relates it to the punch-marked silver coins of India. It appears that it was these local coins, using technology adapted from Greek coins, which provided the prototypes for punch-marked coins made in India."; "In the territories to the south of the Hindu Kush the punch-marked coins, descendants of the local coins of the Achaemenid administration in the same area, were issued by the Mauryan kings of India for local circulation." Bopearachchi, Osmund; Cribb, Joe (1992), "Coins illustrating the History of the Crossroads of Asia", in Errington, Elizabeth; Cribb, Joe; Claringbull, Maggie (eds.), The Crossroads of Asia: transformation in image and symbol in the art of ancient Afghanistan and Pakistan, Ancient India and Iran Trust, pp. 57–59, ISBN978-0-9518399-1-1
Fleming, Where was Achaemenid India? 1993, pp. 68–69: "There was little in his discussion of archaeological material that would support such an identification, and the Elamite evidence was not available to him." Fleming, David (1993), "Where was Achaemenid India?", Bulletin of the Asia Institute, New Series, 7: 67–72, JSTOR24048427
livius.org
"Livius.org". Archived from the original on 20 November 2008. Retrieved 26 December 2008.
nbtindia.gov.in
Parmeshwari Lal Gupta. Coins. National Book Trust. pp. 17–20, 239–240. Archived from the original on 13 February 2015. Retrieved 13 February 2015.
web.archive.org
"Livius.org". Archived from the original on 20 November 2008. Retrieved 26 December 2008.
Parmeshwari Lal Gupta. Coins. National Book Trust. pp. 17–20, 239–240. Archived from the original on 13 February 2015. Retrieved 13 February 2015.