Mahood, H.R.
Pressure groups in American politics
Scribner, 1967
 Buku Teks
Miller, Stephen
Special interest groups in American politics / Stephen Miller
Hindustan Publishing, 1985
 Buku Teks
Edie, Carlene J.
Politics in Africa : a new beginning?
Wadsworth/Thomson Learning, 2003
 Buku Teks
Quigley, Harold S.
The new Japan government and politics
University of Minnesota Press, 1956
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New directions in comparative politics
edited by Howard J. Wiarda
Westview Press, 1985
 Buku Teks SO