1. Achebe, N. (2005). Farmers, traders, warriors, and kings: Female power and authority in Northern Igboland, 1900–1960. Portsmouth, Hants, UK: Heinemann.
2. Achebe, N. (2011). The female king of colonial Nigeria: Ahebi Ugbabe. Bloomington, IN: Indiana University Press.
3. Albaugh, E. A. (2005). The colonial image reversed: Advocates of multilingual education in Africa. Durham, NC: Duke University.
4. Albaugh, E. A. (2012). Language policies in Sub-Saharan African states. Retrieved December 29, 2014, from Language Policies in African States: https://www.bowdoin.edu/faculty/e/ealbaugh/pdf/language-policies-in-SSA-states-albaugh.pdf
5. Albaugh, E. A. (2014). State-building and multilingual education in Sub-Saharan Africa. New York, NY: Cambridge University Press.