Simai, MihaÌ?ly
Pinter Publishers , 1990
Buku Teks
Pearson, Frederic S., author
McGraw-Hill, 1992
Buku Teks
edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
Buku Teks
Keylor, William R., 1944-
Oxford University Press, 1996
Buku Teks
Findley, Carter V., author
Wadsworth and Cengage Learning, 2011
Buku Teks