Chapman, Stephen J.
Cengage Learning, 2013
Buku Teks
Kiusalaas, Jaan
Cambridge University Press , 2010
Buku Teks
Etter, Delores Maria, 1947-
Prentice-Hall, 2002
Buku Teks
Dingyu, Xue
CRC Press, 2009
Buku Teks
Hultquist, Paul F.
The Benjamin Cumming Pub., 1988
Buku Teks