Coudenhove-Kalergi, Richard
Weltmacht Europe / Richard Coudenhove-Kalergi
Seewald Verlag, 1972
 Buku Teks
Building democracy
Leicester University Press, 1997
 Buku Teks
Schroder, Gerhard
Decision for Europe / Gerhard Schroder
Thames and Hudson, 1964
 Buku Teks
Patterns of government: the major political systems of Europe
by Samuel H. Beer ... [et al.]
Random House, 1965
 Buku Teks
Meny, Yves
Government and politics in Western Europe: Britain, France, Italy, Germany/ Yves Meny, andrew Knapp
Oxford University Press, 1998
 Buku Teks