(2007) “Intonational Marking of New and Given Information in Cameroon English”. English World-Wide. Vol. 28:2, pp 187-199.
2006 Intonational Meaning in Cameroon English Discourse: A Sociolinguistic Perspective. Göttingen: Cuvillier Verlag.
2006 “Listing Intonation in Cameroon English Speech”. World Englishes. Vol. 25, issue 3-4, pp 491 – 500.
2006 “Politeness Strategies in Cameroon English: Focus on three pragmatic particles, na, ya and eihn”. The Nordic Journal of African Studies. 15(4):536 – 544
2005 “Lexical Vestiges of English in the Wẽ language: A first report on some distorted English Usage in Cameroon”. English Today 84. 21/4:27-30.