Sircar, D.C.
Motilal Banarsidass, 1960
Buku Teks
edited by Edward Whiting Fox
Oxford University Press, 1957
Buku Teks
Glorier Incorporated, 1993
Buku Referensi
Sellman, Roger Raymond, author
Edward Arnold, 1954
Buku Referensi
Shepperd, William R., author
Barnes and Noble, 1959
Buku Referensi