Thompson, Emily Ann.
MIT Press, 2002
Buku Teks
Smith, B.J., author
Longman, 1971
Buku Teks
Thompson, Laura
Random House, 1969
Buku Teks
Jacquelin Burgess and John R. Gold.
Routledge , 2016
Buku Teks
Harris, Marvin, 1927-2001, author
Simon and Schuster, 1982
Buku Teks