Penn, I. A. (1989). Records management handbook. Gower Pub. Co..
Chicago Style aipamenaPenn, Ira A. Records Management Handbook. Aldershot, Hants., England ; Brookfield, Vt., USA: Gower Pub. Co., 1989.
MLA aipamenaPenn, Ira A. Records Management Handbook. Gower Pub. Co., 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.