1. The influence of western education on Idoma belief system by Idris O.O. Amali
2. A study of Ogbllo Secret Society of Idoma by Idris O.O. Amali
3. Idoma bibliography, 1848-1987 by Idris O.O. Amali
4. Alekwu Poetry as a Source of Historical Reconstruction by Idris O.O. Amali