Weeks, Jeffrey
Longman, 1994
Buku Teks
Christopher, Elphis, author
Temple Smith, 1980
Buku Teks
Weeks, Jeffrey
Routledge,
Buku Teks
DeRogatis, Amy. author
Oxford University Press, 2015
Buku Teks
Hogan, Rosemarie Mihelich, author
Appleton-Century Crofts, 1980
Buku Teks