APA
Tocci R. J., Widmer N. S. j. a., . (1995). Digital systems. Ohio: Prentice-Hall.
Chicago
Tocci Ronald J, Widmer Neal S jt author, . 1995. Digital systems. Ohio: Prentice-Hall.
Harvard
Tocci R. J., Widmer N. S. j. a., . (1995). Digital systems. Ohio: Prentice-Hall.
MLA
Tocci Ronald J, Widmer Neal S jt author, . Digital systems. Ohio: Prentice-Hall. 1995.