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Pusat jasa Perpustakaan dan Informasi ( Perpustakaan Nasional RI), 2013
Artikel Jurnal
American Library Association, 1988
Buku Referensi
edited by Michael Gorman, Paul W. Winkler
American Library Association, 1978
Buku Referensi
Piggott, Mary, author
The Library Association, 1990
Buku Teks
Fritz, Deborah A.
American Library Association, 2007
Buku Referensi