Haynes, E.S.P, author
Duckworth , 1904
Buku Teks
Hertz, Frederick
Oxford University Press, 1944
Buku Teks
Woolf, Leonard
Penguin Books Limited , 1937
Buku Teks
Santogrossi, David A.
Brooks/Cole, 1995
Buku Teks
Centers, Richard, author
Routledge/Thoemmes Press, 1949
Buku Teks