Burke, Gill, author
Longman, 1981
Buku Teks
Vlastos, Gregory, author
A Spectrum Book, 1962
Buku Teks
Dube, Yves, author
Queen's Printer, 1957
Buku Teks
Harriott, Stephen, author
Addison Wesley Longman, 1999
Buku Teks
Kemeny, Jim, author
Routledge, 1992
Buku Teks