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Buku Teks
Eco, Umberto, author
Fontana, 1997
Buku Teks
Crystal, David, 1941-, author
Cambridge University Press , 2007
Buku Teks
Ahmad Luthfi Firdaus, author
Universitas Indonesia, 2016
UI - Skripsi (Membership)
Sarita Anjani Noerhadi, author
Fakultas Kedokteran Gigi Universitas Indonesia, 2018
UI - Skripsi (Membership)