1. Acheampong, Joseph W.“I will pass over you: The Relevance of the Passover to the Understanding of Salvation in Contemporary Ghanaian Pentecostalism – A Critical Reflection from an Akan Perspective.” PhD Diss., Universität Hamburg, 2015.
2. Ajei, Martin O. The Paranormal: An Inquiry into Some Features of an African Metaphysics and Epistemology. Hamburg: Missionshilfe Verlag, 2014.
3. Asante, Emmanuel. Towards an African Christian Theology of the Kingdom of God: The Kingship of Onyame. Gueenston: The Edwen Mellen Press, 1995.
4. Azarian, Reza. “Potentials and limitations of comparative method in social science.” International Journal of Humanities and Social Science 1, no. 4 (2011): 113-125.
5. Bacchiocchi, Samuele. Popular Beliefs: Are they Biblical? Berrien Spring, MI.: Biblical Perspectives, 2008.