Cita APA

 Widmer, N. S. (2017).  Digital systems: Principles and applications.  Pearson.

Chicago Style Citation

 Widmer, Neal S.  Digital Systems: Principles and Applications.  Pearson, 2017.

Cita MLA

 Widmer, Neal S.  Digital Systems: Principles and Applications.  Pearson, 2017.

Atenció: Aquestes cites poden no estar 100% correctes.