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
 Buku Teks SO
Lazinger, Susan S (Susan Smernoff)
Digital preservation and metadata: history, theory, practice
Libraries Unlimited, 2001
 Buku Teks SO
Jain, R. P.
Digital electronics practice using integrated circuits / R.P. Jain, M.M.S. Anand
Tata McGraw-Hill , 1983
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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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