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Pustaka Sinar Harapan , 2005
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Celia Nadia Agatha Thomas, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2021
UI - Tugas Akhir
Kusrin, author
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UI - Tesis (Membership)
Teuku Mohamad Isa, author
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UI - Tesis (Membership)
Sitohang, Marulam, author
Program Pascasarjana Universitas Indonesia, 1992
UI - Tesis (Membership)