Strong, C.F.
Modern political constitutions: an introduction to the comparative study of their history and existing forms
Sidgwick & Jackson Limited, 1960
 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
Maor, Moshe
Political parties and party systems : comparative approaches and the british experience
Routledge, 1997
 Buku Teks
Corbett, Sister Thomas Albert
People or Masses A Comparative Study in Political Theory
University of America Press, 1950
 Buku Teks
Lindsay, A.D.
The modern democratic state
Oxford University Press, 1959
 Buku Teks