Woodroffe, John
Ganesh & Co,, 1919
Buku Teks
Radhakrishnan, S. (Sarvepalli), 1888-1975, author
Macmillan, 1958
Buku Teks
Bharatiya Vidya Bhavan, 1963
Buku Teks
Havell, E. B., author
John Murray, 1920
Buku Referensi
Batley, Claude, author
John Tiranti, 1948
Buku Referensi