Barnouw, Victor
The Dorsey Press, 1975
Buku Teks
Atkinson, Paul, author
Routledge, 1994
Buku Teks
Schusky, Ernest l.
Holt Rinehart and Winston, 1975
Buku Teks
Sands, Lionel
Vintage Press, 1978
Buku Teks
Redfield, Robert, author
Westview Press, 1991
Buku Teks