Barnett, Jonathan, author
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Buku Teks
edited by Thomas Deckker
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Buku Teks
edited by Alexander R. Cuthbert
Blackwell, 2003
Buku Teks
Nur Azzahra Melanavitri Ruskanda, author
Fakultas Teknik Universitas Indonesia, 2018
UI - Skripsi Membership
Fishman, Robert, author
MIT Press, 1982
Buku Teks