Hellerman, H. (1973). Digital computer system principles (Ed.2.). Tata Mc Graw - Hill.
Chicago Style aipamenaHellerman, Herbert. Digital Computer System Principles. Ed.2. New Delhi: Tata Mc Graw - Hill, 1973.
MLA aipamenaHellerman, Herbert. Digital Computer System Principles. Ed.2. Tata Mc Graw - Hill, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.