The International Political Science Association, 2009
Buku Referensi
Ethridge, Marcus E., author
Wadsworth, 2010
Buku Teks
Moten, Abdul Rashid, author
Thomson, 2006
Buku Teks
Roskin, Michael G., 1939-, author
Pearson, 2017
Buku Teks
Academy of Political Science, 2018
Majalah, Jurnal, Buletin