Sapien, M. (1997). Mastering ISDN (Integrated Services Digital Network). BPB.
Čikaški stil citiranja (17. izdanje)Sapien, Mike. Mastering ISDN (Integrated Services Digital Network). New Delhi: BPB, 1997.
MLA način citiranja (9. izdanje)Sapien, Mike. Mastering ISDN (Integrated Services Digital Network). BPB, 1997.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.