America
New York: W.W.Norton & Company, 1988,
 Buku Referensi
Cho, Hae-il
America
Dong-su-Munhak-sa, 1990
 Buku Teks
Spain and the rule of law /
International Commission of Jurists, 1962
 Buku Teks
Spain and the rule of law
Geneva International Commission of Jurists 1962
 Buku Teks
Radcliff, Pamela Beth
Modern Spain, 1808 to the present
Wiley-Blackwell, 2017
 Buku Teks