Kompas, 2008
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Arina Zahra Rafiantika, author
2019
UI - Skripsi (Membership)
Taper, Bernard, author
McGraw-Hill, 1962
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Fakultas Sastra Universitas Indonesia, 1994
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Cortesi, David E.
Holt, Rinehart and Winston, 1982
Buku Referensi