Eggermont, Pierre Herman Leonard
The chronology of the reign of Asoka Moriya : a comparison of the data of the Asoka inscriptions and the data of the tradition
E.J. Brill, 1956
 Buku Teks
Sastri, K.A. Nilakanta
History of India
S. Viswanathan, 1950
 Buku Teks
Nehru, Jawaharlal, 1889-1964
The discovery of India
Meridian Books, 1951
 Buku Teks
Nehru, Jawaharlal, 1889-1964
The discovery of India
Meridian Books Limited, 1951
 Buku Teks
Spear, Percival
India, Pakistan, and the west
Oxford University Press, 1949
 Buku Teks