Atkinson, Rowland, author
Routledge, 2019
Buku Teks
Knox, Paul, author
Longman, 1996
Buku Teks
Gans, Herbert J., author
The Free Press, 1982
Buku Teks
Abrahamson, Mark, author
Prentice-Hall, 1980
Buku Teks
Jan Lin; Christopher Mele
Routledge, 2005
Buku Teks