Zar'a Ya'qob <Aethiopien, K., & Haile, G. (1958). The epistle of humanity: Transl. by Getatchew Haile. Peeters.
Čikaški stil citiranja (17. izdanje)Zar'a Ya'qob <Aethiopien, Kaiser>, i Getatchew Haile. The Epistle of Humanity: Transl. by Getatchew Haile. Lovanii: Peeters, 1958.
MLA način citiranja (8. izdanje)Zar'a Ya'qob <Aethiopien, Kaiser>, i Getatchew Haile. The Epistle of Humanity: Transl. by Getatchew Haile. Peeters, 1958.
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