Kneen, Peter, author
University of New York Press, 1984
Buku Teks
Oxford Blackwell Publishers 1997,
Buku Teks
Mower, Alfred Glenn, author
Connecticut Greenwood Press 1979,
Buku Referensi
Moscow : Union of Soviet Socialist Republics
Majalah, Jurnal, Buletin
Bombay : Oxford Universty Press
Majalah, Jurnal, Buletin