Παραπομπή σε μορφή APA (7η εκδ.)

Tesfaye Teklu, Von Braun, J., & Zaki, E. (1991). Drought and famine relationships in Sudan: Policy implications. International Food Policy Research Institute.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tesfaye Teklu, Joachim Von Braun, και Elsayed Zaki. Drought and Famine Relationships in Sudan: Policy Implications. Washington, D.C: International Food Policy Research Institute, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Tesfaye Teklu, et al. Drought and Famine Relationships in Sudan: Policy Implications. International Food Policy Research Institute, 1991.