Smith, J.H.
Digital logic: basic theory and practice
Newnes-Butterworths, 1971
 Buku Teks SO
Digital library use : social practice in design and evaluation
edited by Ann Peterson Bishop, Nancy A. Van House and Barbara Pfeil Buttenfield
MIT Press, 2003
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Lazinger, Susan S (Susan Smernoff)
Digital preservation and metadata: history, theory, practice
Libraries Unlimited, 2001
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Chaffey, Dave, 1963-
Digital marketing : strategy, implementation and practice / Dave Chaffey, Fiona Ellis-Chadwick
Pear Education, 2012
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Gothmann, William H.
Digital electronics : an introduction to theory and practice / William H. Gothmann
Prentice-Hall, 1982
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