Bangun, Pajung
Sources of power of the political parties in North Sumatra / Pajung Bangun
International Association of Historians of Asia (IAHA), 1974
 Buku Teks
Maor
political Parties.....
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Political parties and political development
edited by Joseph LaPalombara, Myron Weiner
Princeton University Press, 1966
 Buku Teks
China's reforms and international political economy
edited by David Zweig and Chen Zhimin
Routledge, 2007
 Buku Teks
Maor
Political Parties & Party Systems
 Buku Teks