Sands, Lionel
Vintage Press, 1978
Buku Teks
Nanda, Serena, author
Wadsworth, 2002
Buku Teks
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