Downes, John
Barron's Educational Series, 1998
Buku Referensi
Hildreth, Sandra S.
Dearborn Financial Publishing, 1988
Buku Referensi
Oxford University Press, 1993
Buku Referensi
Trask, R.L.
Routledge, 1996
Buku Referensi
British Kinematograph Sound and Television Society
London : Focal Press, 1983,
Buku Referensi