(1998). Technical services today and tomorrow (2nd ed.). Libraries Unlimited.
Chicago Style aipamenaTechnical Services Today and Tomorrow. 2nd ed. Englewood, Colo: Libraries Unlimited, 1998.
MLA aipamenaTechnical Services Today and Tomorrow. 2nd ed. Libraries Unlimited, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.