Kunstler, Mort
The American spirit
Harry N. Abrams, 1986
 Buku Referensi
Montesquieu, Charles de Secondat,1689-1755
The spirit of the laws
Hafner Press, 1949
 Buku Teks SO
Etzioni, Amitai
The Spirit of community
A Touchestone Book, 1994
 Buku Teks SO
Raymer, Robert
Spirit of Malaysia
Editions Didier Millet, 2011
 Buku Referensi
Raymer, Robert
Spirit of Malaysia
Editions Didier Millet, 2010
 Buku Referensi