Steane, John
Routledge, 1999
Buku Teks
Ennen, Edith
North-Holland Publishing, 1979
Buku Teks
Coldstream, Nicola
Oxford University Press, 2002
Buku Teks
Nicholas, David, author
Longman, 1992
Buku Teks
McGarry, Daniel D., author
Littlefield, Adams, 1968
Buku Teks