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Buku Teks
Haddawy, Husain
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Buku Teks
Sanger, Richard H.
Ithaca, Cornell University Press, [c 1954]
Buku Teks
Pugh, Stefan M.
Routledge, 1999
Buku Teks SO
Gayatri Atmadi
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1990
UI - Skripsi Membership