Public opinion and Congressional elections / edited by William N. McPhee & William A. Glaser.
edited by William N. McPhee & William A. Glaser
Greenwood Press, 1981
 Buku Teks SO
Fox, Harrison W.
Congressional staffs : the invisible force in American lawmaking / Harrison W. Fox
Free Press, 1977
 Buku Teks SO
Barone, Michael
The almanac of American politics 1990
National Journal, 1992
 Buku Referensi
Barone, Michael
The Almanac of American politics 1990
National Journal, 1990
 Buku Referensi
Harris, Joseph P.
Congressional control of administration / by Joseph P. Harris
Brookings Institution Press, 1964
 Buku Teks SO