APA (7th ed.) Zitazioa
Penfold, S. (1999). Change management for information services. Bowker-Sauer.
Chicago Style (17th ed.) Zitazioa
Penfold, Sharon. Change Management for Information Services. London: Bowker-Sauer, 1999.
MLA (9th ed.) Zitazioa
Penfold, Sharon. Change Management for Information Services. Bowker-Sauer, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.