Il a apporté d'importantes contributions à l'Encyclopédie copte, une version numérisée de l'encyclopédie d'origine. Il a notamment contribué à des entrées telles que «Saint Pisentius» (co-écrit avec C. Detlef et G. Muller); «Nabis»; «Patape» (co-écrit avec René-Georges Coquin); et «Hajir Idfu»[1].
Il est l'auteur de:
Christianity and Monasticism in Northern Egypt: Beni Suef, Giza, Cairo, and the Nile Delta (Gawdat Gabra, Hany N. Takla 2017)
Coptic Civilization: Two Thousand Years of Christianity in Egypt (Gabra 2014)[2]
The History and Religious Heritage of Old Cairo: Its Fortress, Churches, Synagogue, and Mosque (Gawdat Gabra, Gertrud J. M. van Loon, Stefan C. Reif, Tarek Swelim 2013)[3]
From Old Cairo to the New World: Coptic Studies Presented to Gawdat Gabra on the Occasion of His Sixty-fifth Birthday (Gawdat Gabra, Youhanna Nessim Youssef, Samuel Moawad 2013)[4]
Christianity and Monasticism in Aswan and Nubia (Gawdat Gabra, Hany N. Takla, Saint Mark Foundation - 2013)[5]
(en) Gawdat Gabra, Coptic Civilization: Two Thousand Years of Christianity in Egypt, American University in Cairo Press, (ISBN978-977-416-655-6, lire en ligne)
(en) Gawdat Gabra, Gertrud J. M. van Loon, Stefan C. Reif et Tarek Swelim, The History and Religious Heritage of Old Cairo: Its Fortress, Churches, Synagogue, and Mosque, American University in Cairo Press, (ISBN978-977-416-459-0, lire en ligne)
(en) Gawdat Gabra, Youhanna Nessim Youssef et Samuel Moawad, From Old Cairo to the New World: Coptic Studies Presented to Gawdat Gabra on the Occasion of His Sixty-fifth Birthday, Peeters, (ISBN978-90-429-2731-5, lire en ligne)
(en) Saint Mark Foundation et Saint Shenouda the Archimandrite Coptic Society, Christianity and Monasticism in Aswan and Nubia, Oxford University Press, (ISBN978-977-416-561-0, lire en ligne)
(en) Gawdat Gabra, Coptic Monasteries Art and Architecuture of Early Christian Egypt, American University in Cairo Press, (ISBN978-977-424-691-3, lire en ligne)