The Coptic Encyclopedia - Volume 1 (A)
Aziz Suryal Atiya
The Coptic Encyclopedia - Volume 3 (CR-ET)
The Coptic Encyclopedia - Volume 4 (ET-JO)
The Coptic Encyclopedia - Volume 5 (JO-MU)
The Coptic Encyclopedia - Volume 6 (MU-PU)
The Coptic Encyclopedia - Volume 7 (Q-Z)
The Coptic Encyclopedia - Volume 2 (B-CR)