APA-Zitierstil (7. Ausg.)

Okali, D., Okpara, E., & Olawoye, J. E. (2001). The case of Aba and its region, southeastern Nigeria. IIED.

Chicago-Zitierstil (17. Ausg.)

Okali, David, Enoch Okpara, und Janice E. Olawoye. The Case of Aba and Its Region, Southeastern Nigeria. London: IIED, 2001.

MLA-Zitierstil (9. Ausg.)

Okali, David, et al. The Case of Aba and Its Region, Southeastern Nigeria. IIED, 2001.