Mandela, Rubai & Mwangi, Paul Musyoki (2023). Teaching Practice Demystified: A Handbook for Student Teachers. Eldoret: Utafiti Foundation.
Mandela, Rubai (2021). Before Two Become One: Navigating Pre-Marital Relationships in Africa. Eldoret. Posterity Publishers Limited.
Mandela, Rubai & Likoye, Francis (2022). Researching with Marginalized Communities in Kenya: Issues, Experiences and Reflections . Posterity Publishers Ltd.
Muniandy, B.; Awabil, G.; Mandela, R.; Afutu-Kotey, R.; Kumar, J. and Muyaka, J. (2021). Handbook of Research on Distance Education in Ghana. Vol. 1.
Mandela, Rubai & Muyaka, Jafred (2020). The Nexus of Culture and Christianity: Complexity of Masculinity in Africa . Eldoret: Utafiti Foundation.