edited by Peter G. Bruce
Cambridge University Press, 1997
Buku Teks
Goto, Kazuhiro Sylvester
Elsevier, 1988
Buku Teks
Lenk, John D.
Prentice-Hall, 1971
Buku Referensi
Genn, Robert C.
Parker Publishing Company, 1981
Buku Referensi
Thomason, Michael
Reston Publishing, 1979
Buku Referensi