edited Nancy L. Rosenblum and Robert C. Post
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Buku Teks
Artikel Jurnal
Port, M. H. (Michael Harry)
Published for the Paul Mellon Centre for Studies in British Art by Yale University Press, 1995
Buku Teks
BirdLife International, 2003
Multimedia
Blau, Peter M., author
University of Chicago Press, 1957
Buku Teks