Horowitz, Irving Louis, author
Bina Aksara, 1985
Buku Teks
The World Bank ; penerjemah, M. Ramdhan Adhi
Salemba Empat, 2011
Buku Teks
Kautsky, John H.
Krieger Pub. Co, 1980
Buku Teks
edited by Harvey G. Kebschull
Appleton-Century-Crofts , 1968
Buku Teks
Gamer, Robert E., author
Allyn and Bacon, 1976
Buku Teks