Howard, Darlene V., author
Macmillan, 1983
Buku Teks
Fiumara, Gemma Corradi, author
Blackwell , 1992
Buku Teks
Carroll, John B., author
Prentice-Hall, 1964
Buku Teks
Turner, Johanna, author
Methuen, 1975
Buku Teks
edited by John K. Fairbank
Phoenix Books, 1967
Buku Teks