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Buku Teks
Rachels, James, 1941-2003, author
McGraw-Hill , 2012
Buku Teks
Hutcheson, Francis, author
Cambridge University Press, 2014
eBooks
Rachels, James, 1941-2003, author
McGraw-Hill, 1998
Buku Teks
Destriana Rusmaniar, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2009
UI - Skripsi (Open)