Pavlov, B.
Foreign Languange Publishing House, T.t.
Buku Teks
Atherden, L.M., author
Oxford University Press, 1969
Buku Teks
Ghosh, Jayashree, author
S. Chand, 1997
Buku Teks
McMurry, John, author
Brooks/Cole, 2007
Buku Teks
Lednicer, Daniel, author
John Wiley & Sons, 1984
Buku Teks