APA-ийн эшлэл(7 дахь хэвлэлт)

Hersent, O., Gurle, D., & Petit, J. (2000). IP telephony: Packet-based multimedia communications systems. Pearson Education.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Hersent, Olivier, David Gurle, ба Jean-Pierre Petit. IP Telephony: Packet-based Multimedia Communications Systems. Essex: Pearson Education, 2000.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Hersent, Olivier, et al. IP Telephony: Packet-based Multimedia Communications Systems. Pearson Education, 2000.