HAKALA, D. (1995). Modems Made Easy: The Basics And Beyond David Hakala. McGraw-Hill.
Chicago Style aipamenaHAKALA, David. Modems Made Easy: The Basics And Beyond David Hakala. McGraw-Hill, 1995.
MLA aipamenaHAKALA, David. Modems Made Easy: The Basics And Beyond David Hakala. McGraw-Hill, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.