Woll, Peter
American goverment : readings and cases
Longman , 2001
Buku Teks
Ferguson, John H.
The American federal government
McGraw-Hill, 1981
Buku Teks
Easton, David
A systems analysis of political life
John Wiley & Sons, 1965
Buku Teks
Govermental policy and international education / edited by Stewart Fraser
John Wiley & Sons, 1965
Buku Teks
Easton, David
The political system : an inquiry into the state of political science
Knopf, 1971
Buku Teks