Leiden : KITLV Press
Majalah, Jurnal, Buletin
Koller, John M., author
Charles Scribner Sons, 1970
Buku Teks
English, John W. author
Allyn and Bacon, 1993
Buku Teks
Cumant, Franz
Dover Publications, 1956
Buku Teks
New Slaven : American Oriental Society
Majalah, Jurnal, Buletin