Adams, Parveen
Routledge, 1996
Buku Teks
Dieter Lohmar
Springer Science, 2012
eBooks
Caper, Robert, author
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Buku Teks
Essy Syam, author
Fakultas Ilmu Budaya Universitas Lancang Kuning Pekanbaru, 2017
Artikel Jurnal
Freud, Sigmund, 1856-1939, author
George Allen and Unwin, 1954
Buku Teks