Cioara, J. (2007). Authorized self-study guide: Cisco IP telephony (CIPT) (Second edition.). Cisco Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCioara, Jeremy. Authorized Self-study Guide: Cisco IP Telephony (CIPT). Second edition. Indiana: Cisco Press, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCioara, Jeremy. Authorized Self-study Guide: Cisco IP Telephony (CIPT). Second edition. Cisco Press, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.