Besag, Frank P., author
Sage, 1985
Buku Teks
Thomas, Edwin J., author
Sage, 1984
Buku Teks
Combs, Arthur W.
Alyn and bacan , 1970
Buku Teks
Hawkins, Peter, author
Open University Press, 2005
Buku Teks
Corey, Gerald, author
Brooks/Cole Publishing, 1998
Buku Teks