Orr, 0. D. (1968). Conversational computers. New York: John Wiley and Sons, Inc.
Chicago Style aipamenaOrr, 0William D. Conversational Computers. New York: John Wiley and Sons, Inc, 1968.
MLA aipamenaOrr, 0William D. Conversational Computers. New York: John Wiley and Sons, Inc, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.