Shuttleworth, Riley
McGraw-Hill, 1983
Buku Teks
Grow, Thomas A.
Prentice-Hall, 1975
Buku Teks
Dubin, Fred S., author
McGraw-Hill, 1978
Buku Teks
Oxford University Press, 1977
Buku Teks
McCarthy, Richard C., author
[American Library association;American Library association, American Library association], 2007
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