APA-ийн эшлэл(7 дахь хэвлэлт)

Heine, G., & Sagkob, H. (2003). GPRS: Gateway to third generation mobile networks. Artech House.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Heine, Gunnar, ба Holger Sagkob. GPRS: Gateway to Third Generation Mobile Networks. Boston, MA: Artech House, 2003.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Heine, Gunnar, ба Holger Sagkob. GPRS: Gateway to Third Generation Mobile Networks. Artech House, 2003.