edited by Dorwin Cartwright, Alvin Zander
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Buku Teks
Cotton, F. Albert, author
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UI - Tesis Membership
Kelsen, Hans, author
Clarendon Press Oxford, 1992
Buku Teks
Spiegel, Murray R., author
McGraw-Hill, 1961
Buku Teks
Scheid, Francis, author
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Buku Teks