Veen, Hendrik van der, author
Martinus Nijhoff, 1965
Buku Teks
Chicago : The Modern Poetry Association
Majalah, Jurnal, Buletin
Martin, George R.R., author
Bantam Books, 2011
Buku Teks
Miller, James E., author
Willowgreen, 1998
Buku Teks
Chan, Janis Fisher, author
[American Management Association;, ], 1999
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