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Buku Teks
Tomasowa, Francien Herlen
Universitas Brawijaya , 2005
Buku Teks
Scobie, Janet I.
George Allen and Unwin, 1959
Buku Teks
Doff, Adrian
Cambridge University Press, 2011
Multimedia
Doff, Adrian
Cambridge University Press, 2011
Multimedia