Jackson, William Thomas Hobdell
Collier, 1966
Buku Teks
Ennen, Edith
North-Holland Publishing, 1979
Buku Teks
Sircar, D.C.
Motilal Banarsidass, 1960
Buku Teks
Chase F. Robinson.
Oxford University Press, 2001
Buku Teks
Damon, Philip
University of California Press, 1961
Buku Klasik