Strong, C.F.
Modern political constitutions: an introduction to the comparative study of their history and existing forms
Sidgwick & Jackson Limited, 1960
 Buku Teks
Strong, C.F.
Konstitusi-Konstitusi politik Modern: Kajian Tentang Sejarah dan Bentuk-bentuk Konstitusi Dunia: An introduction to the comparative study of their history and existing form
Nuansa, 2004
 Buku Teks
Dahl, Robert A., 1915-2014
Modern political analysis
Prentice-Hall, 1978
 Buku Teks SO
Farley, John E.
American social problems : an institutional analysis
Prentice-Hall, 1987
 Buku Teks
Modern political parties : approaches to comparative politics
contributors, Frederick C. Barghoorn ... [and others] ; edited by Sigmund Neumann
University of Chicago Press, 1956
 Buku Teks