Werner, Alfred, introduction
Andre Deutsch, 1956
Buku Referensi
Hook, Patrick
Gramercy Books, 1999
Buku Referensi
Eid, Alain
Chartwell Book, 1997
Buku Referensi
Peggie, Djunijanti
Pandu Aksara Publishing, 2014
Buku Teks
Jiggins, Chris D.
Oxford University Press, 2017
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