Hart, Hillary, author
Pearson-Prentice Hall, 2005
Buku Teks
Davies, John W, author
Prentice-Hall, 2001
Buku Teks
Yuliana, author
Grasindo, 2002
Buku Teks
Turner, Lynn H., author
Cambridge University Press, 2019
Buku Teks
Wright, Paul H., author
John Wiley & Sons, 1994
Buku Teks