Coptic in 20 Lessons: Introduction to Sahidic Coptic with Exercises and Vocabularies
Introduction to Sahidic Coptic: A New Coptic Grammar
Coptic Paradigms: A Summary of Sahidic Coptic Morphology
A Coptic Grammar: With Chrestomathy and Glossary. Sahidic Dialect (PORTA LINGUARUM ORIENTALIUM)