Hoggar, S.G., author
Cambridge University Press, 1992
Buku Teks
Hoggar, S.G., author
Cambridge University Press, 1992
Buku Teks
Marshall, George R., author
Prentice-Hall, 1987
Buku Teks
Anand, Vera B., author
John Wiley & Sons, 1992
Buku Teks
Rockport Publisher, 1997
Buku Referensi