edited by Dinah Shelton
Oxford University Press, 2013
Buku Teks
Lawrence Erlbaum Associates, 2004
Buku Teks
Garson, G. David., author
Holbrook Press, 1971
Buku Referensi
edited by Arthur S. Banks, Alan J. Day, Thomas C. Muller
CSA Publications, 1997
Buku Referensi
Cambridge University Press, 2020
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