Roy Clive Abraham

• A dictionary of the Tiv language
• Somali-English dictionary
• The grammar of Tiv
• The Idoma language, Idoma wordlists, Idoma chrestomathy, Idoma proverbs
• The principles of Amharic
• The principles of Hausa
• The principles of Idoma
• The principles of Tiv
• The Tiv people