APA (7th ed.) Zitazioa
Cisco Systems. IT Essentials: Network Operating Systems Companion Guide. Cisco.
Chicago Style (17th ed.) Zitazioa
Cisco Systems. IT Essentials: Network Operating Systems Companion Guide. Indianápolis, EUA: Cisco.
MLA (9th ed.) Zitazioa
Cisco Systems. IT Essentials: Network Operating Systems Companion Guide. Cisco.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.