APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, Obi, C. I., & Rustad, S. A. (2011). Oil and insurgency in the Niger Delta: Managing the complex politics of petro-violence. Zed Books Ltd..

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, C. I. Obi, ба Siri Aas Rustad. Oil and Insurgency in the Niger Delta: Managing the Complex Politics of Petro-violence. London ; New York: Zed Books Ltd., 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, et al. Oil and Insurgency in the Niger Delta: Managing the Complex Politics of Petro-violence. Zed Books Ltd., 2011.