Fagen, Richard R.
The Transformation of political culture in cuba/ Ricahrd R. Fagen.
Calif Standford University Press, 1969.
 Buku Teks SO
Bowles, Chester
Africa's challenge to America / Chester Bowles
University Of California Press, 1956
 Buku Teks SO
Central and Eastern Europe: the challenge of transition
edited by Regina Cowen Karp
Oxford University Press, 1993
 Buku Teks
Booth, John A.
Understanding central America
Westerview Press, 1989
 Buku Teks SO
Booth, John A.
Understanding central America
Westerview Press, 1993
 Buku Teks SO