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Cambridge University Press, 1994
Buku Teks
Collins, David
Cambridge University Press, 2017
Buku Teks
Ralph H. Folsom, Michael Wallace Gordon, Michael P. Van Alstine, Michael D. Ramsey.
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Buku Teks
Schefer, Krista Nadakavukaren
Edward Elgar Publishing, 2016
Buku Teks
Schill, Stephan W.
Cambridge University press, 2009
Buku Teks