Depari, Nathalie Enda Zileta, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2013
UI - Skripsi (Membership)
Aitchison, Jean, 1938-, author
Cambridge University Press, 1995
Buku Teks
Julian Bamfor edited by
:Cambridge University Press, 2004
Buku Teks
Trask, R.L.
Routledge, 1999
Buku Teks
John E. Joseph, author
Edinburgh University Press, 2009
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