Shaw, Ros Byam
Page One Publishing, 2001
Buku Referensi
Hacker, Louis M.
Columbia University Press, 1947
Buku Teks
Hacker, Louis M.
Columbia University Press, 1947.
Buku Teks
Tang, Song
Intercontinental Press, 2007
Buku Teks
Alden, John Richard
Harper & Row Publishers, 1963
Buku Teks