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American Library Association, 1989
Buku Teks
Simpson, I.S., author
Library Association, 1988
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Caplan, Priscillia, author
American Library Association,, 2003
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Sayers, W.C. Berwick, author
Deutsch, 1967
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Bruwelheide, Janis H., author
American Library Association, 1995
Buku Teks