Ethnicity, Language and Identity in Kenya. Modern Africa: Politics, History and Society, 7(1), p.113-137.
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, 2017.
Literacy through a foreign language and children's rights to education: an examination of Kenya's medium of instruction policy. Nordic Journal of African Studies, 25, p.92–106.
2016.
, 2013.
Cultural identity and new communication technologies: political, ethnic and ideological implications. In IGI Global; Hershey, Pennyslavania, USA.
, 2011. Identity and the New Communication Technologies: Evidence from Kenya. In Cultural Identity and New Communication Technologies: Political, Ethnic and Ideological Implications. IGI Global, p. 23–39.
, 2011. The role of foreign and indigenous languages in primary schools: The case of Kenya. Stellenbosch Papers in Linguistics PLUS, 38, p.143–158.
, 2009. Sheng as a Youth Identity Marker: Reality or Misconception?. Culture, performance & identity. Paths of communication in Kenya, p.75–92.
, 2008. Building Bridges through trichotomous youth identities in Kenya: Evidence from code choice. Cultural Production and Change in Kenya: Building Bridges, p.129–47.
, 2007. Language planning and reform: An alternative language policy for Kenya. Language planning for development in Africa, p.37–53.
, 2006. Does Sheng have a Kiswahili grammar. Annual Publication in African Linguistics (APAL), 3, p.5–25.
, 2005. On lexicalization in Sheng. Nordic Journal of African Studies, 14, p.22–22.
, 2005. Linguistic Human Rights in Kenya. In German Academic Exchange Service (DAAD), in Collaboration with Goethe-Institut & University of Nairobi Hosted a Conference on Across Borders, Benefiting from Cultural Differences: At University of Nairobi, Kenya, 17th and 18th March 2005. DAAD, Regional Office for Africa, Nairobi, p. 25.
, 2005. Athari za mabadiliko ya mitaala ya Kiswahili katika uandishi na uchapishaji. In Swahili Forum.
, 2004. Lexicalization in Sheng. Alternation, 11, p.325–342.
, 2004. Educational publishing in African languages, with a focus on Swahili in Kenya. Nordic Journal of African Studies, 11, p.18–18.
, 2002. Trilingual Codeswitching in Kenya-Evidence from Ekegusii. Kiswahili, English and Sheng: Dissertation zur Erlangung der Wurde des Doktors der Philosophie der Universitat Hamburg.
, 2002.