Wales, H.G. Quaritch
Quaritch, 1967
Buku Teks
Puvier, Jan M.
New York : E.J. Brill, 1995,
Buku Referensi
Vasilyev, D., author
Foreign Languages Publishing House, 1959
Buku Teks
Lyon, Peter, author
Oxford University Press, 1969
Buku Teks
Lyon, Peter, author
Oxford University Press , 1969
Buku Teks