Hudson, David M., author
St. Paul, Minn, 1994
Buku Teks
Ottenberg, Miriam
Prentice-Hall, 1962
Buku Teks
Agus Haryadi; Indonesia. Kelompok DPD di MPR RI.
Kelompok DPD di MPR RI, 2006
Buku Teks
edited Norman J. Glickman
John Hopkins University Press, 1980
Buku Teks
Cook, Franklin Henry
Macmillan, 1951
Buku Teks