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Chicago Phoenix Books, 1969
Buku Teks
Oxford University Press, 1995
Majalah, Jurnal, Buletin
Saussure, Ferdinand de, 1857-1913, author
Open Court , 1986
Buku Teks
Aitchison, Jean, 1938-, author
Contemporary Books, 2008
Buku Teks
Salverda, Reinier, author
University College London, 1990
Buku Teks