Gibbons, Robert D.
John Wiley & Sons, 1994
Buku Teks
Robert, Christian P.
Springer, 1999
Buku Teks
Johnson, Palmer O., author
Prentice-Hall, 1953
Buku Teks
Arkin, Herbert
Barnes & Noble, 1957
Buku Teks
Armitage, P., author
Blackwell Scientific Publication, 1985
Buku Teks